box office

US /ˈbɑːks ˌɔː.fɪs/
UK /ˈbɑːks ˌɔː.fɪs/
"box office" picture
1.

the place in a theater or other arts venue where tickets are sold

:
I bought my tickets at the box office.
The box office opens an hour before the show.
2.

the amount of money taken by a movie, play, or concert

:
The new movie had a huge box office success.
Despite mixed reviews, the play's box office numbers were impressive.