Should I apply while I await my scores?

I am taking the ACT in September 2015, I have already taken it and received a 30 but I hope to bump that up a few points. I am a senior in high school, so I need to start to apply for college. Should I wait until I receive my scores to submit my applications, or can I just send the new scores in? I am applying for UF, FSU, and UCF if that makes any kind of difference.

Apply with the 30 and update the schools later. You already have a great score, so if you improve all the better.