At 17, you probably don't have a very realistic idea of your capabilities. Most 17 year olds are a lot better at dreaming than they are at accomplishing difficult things. (Some 37 year olds too, ahem.)

If you have a track record of completing long term projects that you wanted to do (not your teachers, not your parents) that's evidence that you're an exception. If you don't have that kind of track record, take a little warning.

Either way, you should still go for it.

School truly sucks, but I'd get the HS diploma at least, and encourage your friend to do the same. If your venture doesn't work out, you'll be a lot less stuck if you've graduated. Treat school as a system to be gamed and worked around.

Learn to program. See "realistic assessment" above. If you can't program at all, you're not likely to do well running a code based start up. You don't have to be a brilliant coder, just reasonably capable.

(On the other hand, I've heard Ryan Carson doesn't code. Don't know much about the guy. Exceptions, rules.)

Good luck.