How do i get this girl to like me?

I'm 13 and homeschooled i have been my hole life. Every sumer i go to this camp like 200 miles away and theres thi girl there i cant stop thinking about. I dont have a clue if she likes me or if she even knowes im alive. i was just hoping for some advice cause i cant even muster up the to talk to her. watshould i do?