True test is to see if it is squishy. Whenever squishy, it is almost always rot. I assume if it is rotting, you would be able to save it.

The stem isn't squishy at all, it is actually hard. it still looks like pictures of rot from what I've seen on other posts though :(

Just because it is dark it is not always rotting. As palms pointed out, if soft or mushy it would be rot. What plant is it?

I would suggest you pot it into very free draining mix in your hot & humid climate. Mix grit and pumice (or perlite if pumice not available) - it may work with just these 2 ingredients.

It is an Echevaria . I originally got it several months back and it was big and beautiful but the pot they had it in at the store was too small and the soil too rich . I didn't water it for a month literally and the soil was still wet. I should have replanted it when I got it , But I didn't and I'm afraid I waited too long . I will replant in a gritty mix tomorrow and hope it makes it ! Thank you :)

I have a horrible time with Echeveria with the heat and humidity and rain during the summer. Mine are quite prone to mealies, too. So here's my experience with PvN.

Before I knew about gritty mix -this was in c&s soil mixed with perlite.

Your roots look better than mine, but these are still white and firm. Those black spots were hard, not soft or squishy at all. This is 2 of 6 plants that I had.

I cut the one on the left first. Edit - oops, the other left. LOL right?

Oh yeah - that was rot! I ended up decapitating and rooting what heads I could salvage after cutting down to healthy tissue. I nursed them in gritty mix and they did rebound.

Before cutting anything - unless you really think it is rot - I would try potting it up in a really gritty mix - about 20% Turface with perlite and grit. See if it rebounds. I'd keep it in bright shade while in ICU.

BTW - those little leaves on the inflorescence propagate better than the leaves from the plant for some reason. So you may want to try propagating some of those!

Good luck! Managing Florida summers can be a challenge!

Another edit - agree with Rina on using only grit and perlite. Turface can come later.