I was lucky to work in a space by myself. That worked great but not everyone can.

At garden centre

Sadly the world needs to catch up with AUtism.
It was discovered in the 1960's and really wasn't recognized until the 1990's and we are now 30 years later and still there is so much to be considered for those on the Spectrum.
We re still far off from the 'System' being able to support your request.
But...
There are groups/communities with support popping up everywhere.
Start asking your local grocers if they have Bagging positions available, or if they need people to clean the parking lot and gather grocery carts.