How to ask someone out?

So I just found out a guy I had a crush on a few years ago is gay. He is the most popular kid in my grade, and he is very hot. He's also very nice to everyone and he is smart. I would be considered his friend, but I'm not in his "sqaud". How do I approach him? Schools tarts in September, so I have a month, but I really want to date him. I just have no idea how to ask him out. Advice? (BTW I am out, but I just came out so no one know I'm gay that goes to my school, I'm also going into 10th grade)