Open the email you received on your Samsung and save the QR code to your gallery.
Go to your phone’s Settings and select Connections
Select SIM manager on the Connection screen
Select Add eSIM on the SIM manager screen
Select Scan QR code on the Add mobile plan screen to scan the QR code you received on your email
Tap Add on the Add eSIM confirmation screen
Optional: Enable data roaming in network settings if you bought a travel plan