How can test how effective the vaccine is for me or how test how well i responded to the vaccine ? im vaccinated?

There is a new Vaccine Antibody Test, recently given FDA emergency approval for persons to check their immunity after a Covid 19 vaccine. The test is currently available at a small number of select locations, from the company Any Lab Test Now. This test is different from the more common Covid 19 antibody test, which tests antibodies from a Covid 19 infection.

Antibody testing after vaccination is not recommended. The level of antibody may be falsely reassuring or worse, anxiety producing when that person may well be protected. For a reasonable discussion, https://www.pbs.org/newshour/health/covid-antibody-test-after-vaccine may be helpful. The CDC website also addresses this issue.