Just found this on the Federal Trade Commission

Avoid Coronavirus Scams

COVID-19 vaccines are free. If anyone charges you for help signing up or the shot itself, it’s a scam.

You can’t buy the COVID-19 vaccine anywhere. It’s only available at federal- and state-approved locations.

Always talk with your doctor or healthcare professional before you try any product claiming to treat, prevent, or cure COVID-19.

Don’t post your vaccination card to your social media account. Someone could use the information for identity theft.

Right now, there are no official plans to create a national vaccine verification app or certificate or passport.

If someone asks you for personal information or money to get a national vaccine certificate or passport, that’s a scam.

Contact your state government

about its vaccine verification plans and requirements.

Check with airlines, cruise lines, and event venues about their vaccine verification or negative testing requirements.

When you’re looking for pandemic-related help, start with sites like coronavirus.gov and usa.gov/coronavirus.

https://www.ftc.gov/news-events/features/coronavirus/scams-consumer-advice