Acting leads towards hell (or lower destinations), it is one of those things perceived to be harmless but actually causes harm.
But it's not true that all actors would go to hell just that acting itself leads towards hell.
In fact believing "all people who do certain things go to hell" is a wrong view that leads towards hell according to The Buddha:
'Our teacher holds this doctrine, holds this view: 'All those who
steal... All those who indulge in illicit sex... All those who tell
lies are destined for a state of deprivation, are destined for hell.'
There are lies that I have told. I, too, am destined for a state of
deprivation, am destined for hell.' He fastens onto that view. If he
doesn't abandon that doctrine, doesn't abandon that state of mind,
doesn't relinquish that view, then as if he were to be carried off, he
would thus be placed in hell. (Sankha Sutta, SN 42.8)
The Buddha also explains in other suttas the complexities of kamma that it's not true that all people who do evil go to hell or that all people who do good go to heaven, some people who do evil still go to heaven and others that do good go to hell.
"Now there is the person who has killed living beings here... has had
wrong view. And on the dissolution of the body, after death, he
reappears in a happy destination, in the heavenly world.But (perhaps)
the good kamma producing his happiness was done by him earlier, or the
good kamma producing his happiness was done by him later, or right
view was undertaken and completed by him at the time of his death."
(Maha Kammavibhanga Sutta, MN 136)
What happens to a person after death relies on much more than just one thing or one deed, but also earlier kamma, later kamma, and the view at the time of death, which is why sometimes good people go to hell and evil people go to heaven.
The effects of kamma however will always be felt in some form either now or in some existence
"...he will feel the result of that here and now, or in his next
rebirth, or in some subsequent existence" (Maha Kammavibhanga Sutta,
MN 136)
The Buddha also explains how an evil deed can take one individual to hell but for another individual gets experienced here and now and barely appears for a moment, depending how developed the individual is in body, virtue, mind, and discernment:
"Now, a trifling evil deed done by what sort of individual takes him
to hell? There is the case where a certain individual is undeveloped
in [contemplating] the body, undeveloped in virtue, undeveloped in
mind, undeveloped in discernment: restricted, small-hearted, dwelling
with suffering. A trifling evil deed done by this sort of individual
takes him to hell.
"Now, a trifling evil deed done by what sort of individual is
experienced in the here & now, and for the most part barely appears
for a moment? There is the case where a certain individual is
developed in [contemplating] the body, developed in virtue, developed
in mind, developed in discernment: unrestricted, large-hearted,
dwelling with the immeasurable. A trifling evil deed done by this sort
of individual is experienced in the here & now, and for the most part
barely appears for a moment." (Lonaphala Sutta, AN 3.99)
Since everyone has intentionally or unintentionally done evil deeds, had wrong views, etc...either now or in the past they should try to become developed in body, mind, virtue, discernment, and large-hearted.
So will "all actors go to hell?" the answer is no.
But will "most actors go to hell?" I'm not sure, The Buddha seems to indicate that most people in general go to the three lower destinations after death (hell, the animal realm, realm of ghosts).
Then the Blessed One, picking up a little bit of dust with the tip of
his fingernail, said to the monks, "What do you think, monks? Which is
greater: the little bit of dust I have picked up with the tip of my
fingernail, or the great earth?"
"The great earth is far greater, lord. The little bit of dust the
Blessed One has picked up with the tip of his fingernail is next to
nothing. It doesn't even count. It's no comparison. It's not even a
fraction, this little bit of dust the Blessed One has picked up with
the tip of his fingernail, when compared with the great earth.
"In the same way, monks, few are the beings who, on passing away from
the human realm, are reborn among human beings. Far more are the
beings who, on passing away from the human realm, are reborn in
hell... in the animal womb... in the domain of the hungry ghosts.
... "In the same way, monks, few are the beings who, on passing away
from the human realm, are reborn among devas. Far more are the beings
who, on passing away from the human realm, are reborn in hell... in
the animal womb... in the domain of the hungry ghosts." (Pansu Sutta, SN 56.102)
So most people in general go towards the three lower destinations (hell, the animal realm, realm of ghosts) after death including actors and non-actors...very few go to the more pleasant destinations (humans, devas (heavenly world)).