Welcome to the forum @Viari_Leathers
General information:
Restoring files if your Duplicati installation is lost
Disaster Recovery
Store somewhere safe, refresh on major change. These settings come from Duplicati-server.sqlite.
Exporting a backup job configuration
Database management explains how to recreate a local per-backup database, and what DB path is.
Migration to new PC - faq wanted explains how to move, if your previous system data is still available.
You mentioned a .config file, which I don’t seem to have. If you meant Linux .config/Duplicati, the equivalent on Windows is the %appdata%/Local/Duplicati folder mentioned in the migration article.