Fences Snapshots are available for backing up Fences and their desktop layouts, however, if you want to back up actual Fences setting, one needs to export its Windows Registry entries:
HKLM
HKEY_LOCAL_MACHINE\SOFTWARE\Stardock\Fences
HKCU
HKEY_CURRENT_USER\SOFTWARE\Stardock\Fences
Batch File
This batch file will export them both and place them in the current users \Documents folder.
https://cdn.stardock.us/support/uploads/FencesRegExp.zip
To restore these specific settings, double click each reg file and follow \ accept the prompts from Windows.
Note: You will need to log-off/login or reboot after restoring the .reg files
Demononstration
Video of the process
https://cdn.stardock.us/support/uploads/explorer_2023-01-19_12-13-10sdrohan.mp4