Like I said, the data folder is the main folder with all the settings/user database/commands/etc. But if you have a playlists folder, that would be another thing to backup. Same with the OBS Folder, unless you don't mind the .txt file defaulting and the custom logs folder if you use that.
After backing whatever you want up, or simply copying them to your desktop. Uninstall Deepbot, then re-install it. Then open up Deepbot once, close it. Move all your backups back to your deepbot folder and start up deepbot.