Florida has no license reciprocity with South Carolina. You'll have to complete all of the prelicensing (40 hr. course) requirements and pass the exam.
Florida actually does have reciprocity with South Carolina IF you've been licensed for over a year.
It was a P.I.A. when I did it because the website said there was no reciprocity, I called and they said they did, only to find out because I had been an agent less than a year I had to retest and get finger printed.