If you are US Citizen and can make the required score on ASVAB then you are qualified. You just have to get to the states or a possession i.e. Guam, American Samoa, etc and enlist.
Patience youngster. No one is eligible to enlist until they are at least 17 years old (and then you parents have to sign a permission form approving your enlistment.) If not then you have to be 18. Good luck.