Learning programming for starting an app bussiness as 14 year old teenager girl… Any advise for school-code balance?

As a teenager, technology always fascinates me. I just want to get started with an app development business by the end of the year. Right now, I am trying to build my own value of in the tech industry. I want to be a tech tycoon. Right now, it is my learning time. I applied for WWDC18 but was rejected… I am also learning to develop facebook and Instagram effects. I am 14 now. I am in 10th grade. Can anybody here help me to balance my school and code experience and also give me some precious advise for that??