Here’s my advice from someone who’s never asked out anyone or has been asked out:
If your crush tells you that they like you, tell them that you like them. If anyone who isn’t your crush tells them that they like you, tell them that you don’t like them. (If you guys are good friends then you should tell them that you just want to be friends but if not, it doesn’t really matter)
If anyone asks you out on a date, make sure that your parents say that you can go on one. If you don’t know the expectations or the expectations are that you don’t go on dates with anyone, decline.