French is almost useless. It's NOT needed anywhere at all, except where it's artificially imposed. English is imperative, no matter where you live.
Even spanish is not that important. I used to think it was, as I frequently travel to places where it is the dominant language. I've since discovered that my time is much better spent doing things that make me more money to travel than it is learning the language. The people I meet in those spanish speaking countries primarily WANT to practice their english and are not all that interested in having conversations with me in spanish.
I think the people who pick up multiple languages are a l to like those that read music or really get high level math -- with enough work, SOME people will get really good, but a large number of people literally never will no matter how hard they work -- they are wasting their time even trying.