What was the result when you followed the instructions in the Related Article above your name on this page, that you were reading just before you posted here? Specifically the instructions for adding it to the wallet from the health app:
If you have an existing verifiable vaccination record stored in the Health app
If you previously scanned a QR code, downloaded a file, or connected with your healthcare provider to add your health records on your iPhone or iPod touch, you can add your stored verifiable COVID-19 vaccination record to Wallet.
- Open the Health app.
- Tap Summary in the bottom-left.
- Under Vaccination Record, tap Add to Wallet.
If you don't see the Add to Wallet option:
- Tap Browse in the bottom-right, then Immunizations.
- Tap the immunization record type.
- Tap the verifiable vaccination record that has a checkmark.
- Tap Add to Wallet.