That was over 24 years ago in 1998.
Today he is 71, and has starred in 88 movies in total, 51 since Rushmore was released.
In Rushmore, I think Bill Murray looks:
Rushmore scores 7.5 out of 10 on The Movie Database.
Bill Murray's first acting role was as 'Nick Kessel (uncredited)' in Next Stop, Greenwich Village, released in 1976 when he was 25.