It is not illegal to consume but in sports it is. Can it be bought at GNC or pharmacy? What is wrong with HGH

First of all, I’m turning 15 on September 18. Am I going to get any taller? I’m only 5 feet and three fourths of an inch. I don’t eat dairy food because I’m lactose intolerant but sometimes I try to force myself to eat dairy food because I want to eat real calcium instead of taking supplements! I drink soda a lot, more then I should, but the ones without caffiene. Does this have to do with genetics? My mom said she stopped growing around my age, but she thinks it was because her family couldn’t afford milk and stuff like that in Korea. Will I get any taller? TT__TT
I’m not 5’3 I’m 5’0 and 3/4. Almost 5’1.
Oh by the way, I have scoliosis. Does that affect height?
I heard that caffiene shocks your growth, but I guess for you it was all in the gentics…? And sure, if we could haha.