TLDR If I get arrested for being topless as a trans women the outcome would either be
1: it’s illegal, which would be a win for trans women as we would be considered closer to cis women, or
2: it’s legal which would be a win for free the nipple movement because it could be argued “that trans women can do it and their boobs are the same as ours”
I’m not familiar with Florida laws but in much of the US anyone can legally be topless under certain conditions. I think it’s usually exposed genitalia and sexual intent that are specifically illegal but general toplessness without sexual intent that isn’t creating public disorder isn’t something you are likely to be prosecuted for. You could get harassed and possibly arrested but it’s unlikely to go further than that. If you really want to do this you should consult with an attorney to get prepared ahead of time.