I'm thinking that maybe someone in your position, assuming you would like to get a 4-year degree, might be better off starting at community college. In my opinion, it'll be an easier transition for you if you spend some time at community college, taking classes that suit your interests or career plan. You won't need to worry about taking the SAT or anything of the sort. As long as you've graduated high school or have your GED, I'm pretty sure you can get started at community college pretty quick. You might have to take a math, reading, or writing placement test but I don't think you do if you have your high school diploma (someone please correct me if I'm wrong here).
Then, once you've spent some time at community college, up to two full years or 64 credits, transfer to the university that you would like. If you've got a good GPA and whatnot, you should be able to get into the university of your choosing no problem.