The movie FINALLY broke even after two weeks
According to box office mojo, the movie is around $800M and it FINALLY broke even.
As a rule of thumb, the benefit is 50% of domestic and 33% of foreign. That would make $277/2 + $519/3 = $315M.
The budget was $300M ($150M movie budget + $150M marketing expenses). So as I said, Captain Marvel finally broke even, it took two weeks.
Of course, I'm using the official numbers provided by Disney. There has been many reports of empty theaters that could signal that Disney is buying tickets to cover movie's backlash. If they've used, let's say, $50M, which is a reasonable number, that would mean they'll need to reach $900M (supposed the same proportion domestic+foreign) ONLY TO BREAK EVEN.