Electrum use is not an advantage when trying to import a watch-only wallet because the wallet focuses more on security than the interface, notifications.

Open the Ledger Wallet Chrome bitcoin app
Click on your account, it’s called “My account” by default
Click ”Account Settings” in the top right corner.
Click “Export” next to “Extended public key” (xpub)
now you can use Sentinel or any app to scan that QRCode