AFAIK, contrary to Passport 2 Jade doesn't reveal xpub's fingerprint on its display Passport 2 does! thus the one way to see it is to use 3rd party software like Sparrow.
The Jade shows the wallet's fingerprint on its display. It has to be in an "Active" status for it to be displayed. For stateless use, that means you will have to load your seed from a QR and enter the correct passphrase (if you created one). After that, the 8-character fingerprint appears on the bottom right of your Jade's display.