It’s fine to be lesbian! It means you can shoot magical gay rainbow sparkles out your butt!
All jokes aside, if you think your parents will kick you out, don’t come out for a few years, until you’ve left home and can support yourself. Your safety is your number one priority.
If you need someone to talk to, reach out to someone in your school, like a counsellor or teacher. Try support groups online, lots of other LGBT+ kids are in your situation. There is a great queer community here on KS and we’re always here for you.
Hope you’re okay :)