I'm in California. There are still a few gas stations with Full Service as an option. All the ones I can think of around here are not affiliated with major oil company, and tend to do repairs. The photo below is from Google maps of one near me. Full service will cost you 50 cents a gallon more. This station also a large senior citizen customer base. The kind of folks who may drive 1,000 miles a year, and maybe use 4 tanks of gas a year, and don't mind paying for to have the gas put in their car.
I should add that ADA requires self service gas stations to pump gas for a customer if that customer has a disability and requests the service.
https://www.ada.gov/gasserve.htm