The Passion of the Christ opened in the United States on February 25, 2004 (Ash Wednesday, the beginning of Lent).
It earned $83,848,082 from 4,793 screens at 3,043 theaters in its opening weekend and a total of $125,185,971 since Wednesday, ranking it fourth overall in domestic opening weekend earnings for 2004 as well as the biggest weekend debut for a February release (until Fifty Shades of Grey was released).
It went on to earn $370,782,930 overall in the United States
These aren’t the numbers that should be looked at. Going to a movie today can cost as much as $12 per ticket. The real number is how many people went to see the movie.