I go overboard, so don't think of 50 million as an accurate assumption to get to the top 1-10, it probably takes much less than that. Depending on the prize fight, I've seen people get top 10 with scores as low as 2 million and scores as high as 20 million. However, that was a little while back, a lot of people are starting to catch up and so scores are probably going up. I'm not gonna get your hopes up by saying something like "Get 10 million and you'll make top 10" because if word gets around, then everyone's going to be shooting for a score above that.
Dude, this thread is from 2017. I think since then, there has been an enormous number of other events created that you might like. Check out the other lines as well as the in-game news. I'm sure you'll find something cool!