I don’t know what state you live in, but nurses generally renew their licenses every three years, taking a small number of continuing education.credits, which are easy to pass. Open book tests.
Some nurses have special certifications which may be more rigorous, and some nurses need to certify in Advanced Life Support every two years.
The dirty little secret is ACLS instructors are not allowed to fail anyone. If you pay your money and take the course you will pass.