i am not vibe coding but here and there i need few snippets like how to set a random value to a variable, etc. is it allowed to ask AI about them

heck no

as long as ur not blindly copy pasting code and understand what the code you're writing is, yeah it's allowed

Try doing it yourself. Of course, it'll turn out badly at first, but that's part of the learning experience. Over time, you'll realize it's much easier than you think, and you'll actually end up making something much better than the garbage AI produces. Seriously, AI is really inefficient at this kind of thing.