Do you want to be paid? Enter into a contract with your parents to pay you. If they are indigent, a small amount of compensation is available through Medicaid in some states.
Smiley1965, as MACinCT said, there are classes that can help you learn home health aide techniques or even to become a certified nursing assistant (CNA). If you want your family members to pay you, then a personal care agreement (PCA) is important to have in place and Aging Care explains why and provides a template for such at: https://www.agingcare.com/articles/personal-care-agreements-compensate-family-caregivers-181562.htm
