Hey @ob6gottablast - sorry to hear about this.
It seems like the Dropbox Folder on your computer was not deleted when you uninstalled the Dropbox desktop app in the first place.
Can you navigate to the Dropbox Folder now and delete it from your Mac?
This should free up any hard drive space that was taken up by the Dropbox folder.
Just make sure you don't need any of the files that are stored there first.
I hope this helps and please keep me posted on your progress.