Time Machine backups can also be used as a data source in the built-in Migration Assistant app.

Open the Migration Assistant app if you've already setup macOS.

Select the From a Mac, Time Machine backup, or startup disk option in the list of transfer choices, and click Continue.

Select the backup drive icon in the list of choices, and click Continue.

If you backed up to a NAS and don't see it in the list, ensure you're connected to the same network.

You may be asked to enter a decryption password. Enter the one you chose previously, when configuring your backup.