What a weird question. Probably, during the Holocaust, a maximum of 3% of non-Jews would have hid Jews. And this is entirely dependent upon which country we’re be talking about.
There is an obsession with picking at scabs, and your mama told you to leave them alone.
It’s easy to say what one would do in that situation with the benefit of hindsight, and from the comfort of their current situation.
I think very few have any idea how they would respond in such a situation. I’ll take a huge grain of salt with anyone who says they would have resisted the Nazis had they been in that situation.