The FBI considers a fake vaccination card to be illegal use of a government seal which carries a fine of $5000 or 5 years in prison. Religious exemption is probably your best bet.
Or you could just get vaccinated.
Those shots are not vaccines. That is the point. They do not prevent covid and they have horrid side effects. If this guy gets that shot, he will need to get another and then another booster. There is no end to the “jabs” and they do cause clotting and other dangerous health issues.