He'll most likely be fine for several reasons. Firstly, wrestling is gone back to being a niché product. We all know that if we're being honest. This is good news for stuff like this, because the fact that Vince McMahon got his rocks off will never be headline news. The average person doesn't even know who he is. Secondly, the share holders are too scared to force him out. There's never been anyone else in charge of WWE while it's been public, and even for the previous 2 decades before that (save a brief period where Linda took charge during the steroid trial, but that was so short that it shouldn't count anyway). So shareholders are faced with a question, what will tank shares more? This controversy, or Vince potentially being forced out? Almost certainly the answer would be Vince leaving. So he stays.
I think the only scenario he goes is if sponsors start pulling out, like Snickers, KFC, whoever else. If they get spooked it could seriously hurt the brand. It's possible, but not likely right now. If claims keep coming out though, who's to say. So to answer the original question, 4/10, he's almost certainly going to be fine on this one.