Here are some common rating systems and their maximum star counts:
* IMDb: Uses a 10-point rating system, with a maximum of 10 stars.
* Rotten Tomatoes: Uses a percentage system based on critical reviews, with a maximum of 100%.
* Metacritic: Uses a 100-point system based on reviews from critics and users, with a maximum of 100.
* Some movie websites and publications: May use a 5-star system, where a 5-star rating represents the highest possible score.
So, the maximum number of stars a movie can get depends on the specific rating system being used. There isn't one universal maximum across all platforms.