Moving playlists from my USB to my new PC

Hey everyone,

So my old laptop died on me the other day and during the process, I lost all of my music that were in the files.  During that moment though i realized that all of my music has been loaded onto my USB that I use for playing with CDJ's.  What I am trying to do is find a way where I can take the playlists that have already been loaded onto this USB, and move them to the playlist section in Rekordbox

If you have any tips i would greatly appreciate them