You will likely never need to use these backup archives directly. They will be used by the ansible playbooks provided in the ShyftNetwork/veriscope repo when installing/configuring a veriscope node or when restoring/upgrading the Nethermind database.
Select the appropriate version of the backup (tar.gz file) and replace the nethermind_db folder in your Nethermind installation with the contents of this archive.
The backup archives are segregated by the version of Nethermind.