The only "influencer" that I can think of who has done anything involved in Hollywood was John Green, and he isn't the typical influencer. Even then, his path there was to use his fame to sell his product, books, and then that product became something that Hollywood could turn into a movie.
Outside of that, I think the Five Nights at Freddy's movies had influencers in the cast, but I don't see them using this to build an acting career yet.
Usually, it isn't that an influencer becomes a movie star, but a movie star becomes an influencer since the star can use their same to build a following online. That's likely why studios use the follower count as a metric in getting actors for certain roles; it is a way to determine fame and the ability of the actor to pull in crowds to see a movie.