COVID-19 tests and vaccines are free, even if you don’t have insurance. You can get a test/vaccine at your local Walgreens, CVS, Rite-Aid, or clinic. Some places allow walk-ins but others may require an appointment so call before leaving
Do you have any lingering concerns about the vaccine? Here are some answers for your concerns: the vaccine is not to inject you with COVID-19, but to provide you with the antibodies to fight against COVID-19. You will not be injected with a microchip and the vaccine will not alter your DNA.