Are you 60 years old or older? Do you need help finding services? Call the Senior Help Line. They welcome calls from any senior or anyone concerned about a senior. They'll answer questions and will refer you to a case manager or to another agency that can help.
This Social Security website explains who is eligible, how to apply, and appeal rights for SSI (Supplemental Security Income), a benefit program for low-income people with disabilities.
The United States Social Security Administration (SSA) administers disability and age-related benefit programs. This SSA website has a lot of useful information.