I'm the grandaughter to a 90 & 89 set of grandparents.They are no longer driving & live in lowincome housing. Can I get paid to care?

It's unlikely, but if they are on Medicaid, it's possible that you can get paid for some hours. Please check with your State's website. Type aging in the search box and look under links where help may be available. Much depends on your state, as some state's offer more help than others.
Good luck with this. I'd love to see it happen!
Carol