If you want to back up your LOOKs, you can access them on your disk and copy them to a backup location. You’ll find an Input and Output folder in these folders, and under each is a folder for a group’ of LOOKs.
macOS
~/Library/Application Support/Radiant Imaging Labs/Radiant Photo/Looks
Windows
%appdata%\Radiant Imaging Labs\Radiant Photo\Looks
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