I have around £5,000(7643 USD) in my adult savings account from what job I used to do. I am saving it for many reasons, whether to put a deposit on a mortgage, money to get started when I migrate to another country. I don't really know, I have a lot of ideas of what to do with it, I've literally locked it and put it in my fathers name until I'm 21. That way I wont spend it on some really high tech kit.
I only get around £300(458.58 USD) all together including birthday and Christmas money, since my birthday is literally two days before stuffmas. it sucks.
I suggest you save that money and save it for later life. My brother and sister struggled through university because they had spent their savings on stuff and getting drunk. I don't want to struggle when I'm at university.