Questions about many worlds theory

now, keep in mind that im a noob so dont mind f*ck me or make me look stupid please.

1- since universes diverge, would this mean that there are infinite number of universes or a set number? even after 1 second, there must have been hundreds of billions if not trillions of universes created to account for every single scenario.
2- are universes created at that moment or are they predisposed?
3- if time is proven to be real, and assuming there are a set number of universes did other universes exist before the big bang?
4- last one. and assuming that there are divergent universes, would there be divergent universes for them too?

thanks to anyone who can answer this one. i had a 5th one, but i confused myself.

1:
There is a set number but it is so unfathomably large that it contains every possible outcome. More or less it is infinity but there is actually a number it is just beyond anything you could ever wrap your head around. It would be every possible permutation of every single part of every atom and you have to work in tunneling probability for every particle and their possible outcomes. It would be "close to infinity" but definitely finite.

2:
Depends on what theory you hear from. I am for the created at the moment rather than predisposed. However, both arguements can be valid since the predisposed ones would contain every possible permutation of every other universe. But it is a bit easier to imagine that they are created at a moment although each universe is said to develop in it's own frame so it is continuously creating near infinite numbers of universes.

3:
No one knows anything about "before" the big bang. As far as the greater physics community is concerned time was created with the big bang so there is no time before. Obviously there are theories about time before the big bang and relapse and cyclic theories but obviously can't prove that with our current understanding of physics.