Box Office Mojo is a website that tracks box office revenue in a systematic, algorithmic way, founded in 1999. In 2008, Box Office Mojo was bought by the Internet Movie Database, owned by Amazon. The website is widely used within the film industry as a source of data.
These are the top 10 horror films rated on Box Office Mojo as the films go down in the list the amount of money (the total grosses) which you can see that Scream from 1996 had made $103,0546,663 which has been seen in 1,994 theaters which compared to Halloween from 2007 which had 3,472