If you are not filing a 2019 tax return and you are not required to file a tax return and you do not receive Social Security benefits, then use this TurboTax website to register for the stimulus - https://turbotax.intuit.com/stimulus-check/
That’s the thing I’m not sure about. I’m not sure if General Assistance falls under Social Security or not.
If you are receive state aid that would not be from Social Security.
If you receive SSI, Supplemental Security Income is a Federal income supplement program funded by general tax revenues (not Social Security taxes)