* "The Joker" isn't a real person. It's a fictional character from the Batman comics and subsequent movies.
* The actors who play The Joker do make money. But their salary varies depending on the film, their experience, and negotiation. For example, Heath Ledger's salary for "The Dark Knight" was significantly different from Joaquin Phoenix's for "Joker."
If you are asking about the earnings of specific actors who have played The Joker, you need to specify the actor and the movie.