I’m 13 about to turn 14 and I need help

So I’m not the prettiest person and the girl I like is tall a red head and and I would say is a 10/10 and I’ve talked to her a lot and spent my school dance talking with her after she got ditched but other then that we’re not really even friends we just know each other and I’ve liked her since I first met her in the 6th grade and I’m now going into my freshmen year and I want to try to shoot my shot but I don’t know how and I’m kinda scared to do anything because I have 0 self confidence when it comes to girls and im scared to get rejected by her because I do want to keep being able to talk to her.