Where I can find the Bloons TD 5 Deluxe save file?
You can find the save file for Bloons TD 5 Deluxe (now known as Bloons TD 5 Steam) at the following location:
C:\Program Files (x86)\Steam\userdata\(your steam ID)\306020\local\data\docs.
OldProfile.save and Profile.save is your save file.