As a client you can add your vaccination status upon sign up or in the client portal (if enabled by your PT/studio).
Step 1: From the Online Portal, Click 'Sign Up'
Step 2: Answer "Yes" if you have had a Covid 19 Vaccination
Step 3: Click Upload Certificate / Document
Step 4: Continue with Sign Up & verification will appear at the completion of sign up
Step 1: From the Online Portal, Click Login
Step 2: Navigate to Settings > Vaccination Verification
Step 3: Optional: Click Upload Vaccination Certification / Document
Step 4: Check the box vaccine verified
You are now registered as Vaccination Verified!
Related article: Covid-19 Vaccination Verification feature