how do i tell my parents i want to leave so that i can pursue my music?

Evynova, how absolutely dare you. Don't you DARE for a second try to discourage people from their dreams because you deem it unlikely to happen. It is NOT worth it to slave away to a boring, un-satisfying job when there's something you're passionate about you want to pursue, even if the odds are against you. Also, what even is the point of not trying at all? I'd much rather fail trying.

I understand where you're coming from. You must realize however that you are still young. I do have a suggestion for you, so that I'm not completely shooting down your idea however.
Maybe finish out high school. And just look for a really good music school that you can get accepted into. I'm sure your parents will full heartedly support your choice then, to go to school for what you love. And if your career doesn't work out as you plan, then you can always have other options open after attending a college / university. I'm not saying that you definitely should not move out at 16 to pursue your dreams, but maybe take a step back and fully survey the situation. Is this really what you want? Is it going to get you where you want to go? Is it going to be worth everything you're throwing away? I don't want you to feel discouraged about pursuing this, please, go ahead and throw your heart and soul into this. But there are ways to go about it that can prove to pave an easier path for you.
By the way, it looks a little fishy you saying you're 16 when your profile age says 13.