I don’t think Bill would divorce her. He would be a star witness against her and he would be arkancide. I think fear will keep both of them together.
They can choose to either smile for the public and play nice while pretending to be happily married, or they can draw daggers to destroy each other.
I think they both know where all the evidence & bodies are all buried and they fear each other. Hillary is the more evil between both of then.