My sons are in Spain. They bought esims and have a verification code but there does not seem to be a way to enter them. Samsung says go to settings>connections>SIM manager>add esim>scan qr code>gallery > and select "enter activation code", but this option does not exist, only select a picture or screen shot. They are trying to contact support of the esim but I though I'd try here as well.
One possibility worth trying is to find a QR code generator online that will let you embed the verification code, then pull that QR code from the gallery of the target phone.
