What are some examples of when to use "a few" and when to use "some"?

So, this is about countable things. I was answering a question where someone wrote “some” gives a “higher importance” regarding the number of people who don’t follow the teachings of a god/God but think a God/god exists. But I used ” some” because if we’re talking worldwide, I think it can’t be just “a few”. Which one is the best answer from Google search (some vs a few)?
https://tinyurl.com/r74pzjdb