Your son DOES have access to alumni information.
The Career Services office can give him a list of recent alums working in various fields, living in different places, working at different companies, attending different grad programs. (They won’t give it to YOU but will give it to him). Alumni volunteer to be mentors, and agree to have their information distributed to current students.
The Alumni Relations office can give him a list of alums living in the town/area where the college is located. They won’t give it to YOU but they will give it to him.
Faculty contact information is in the directory which your son has.
He needs to be proactive, but right now there are all sorts of ways to figure out his low cost logistics which won’t require a parents help. Give him a budget and he can work this out.
You may think that nobody wants a stranger living with them right now- but you’d be surprised what people will do for a small amount of cash when they have either lost their job or are about to lose their job. I’ve got a neighbor who just had a baby- they decided that their live in babysitter is “high risk” and don’t want her living with them for now- the woman is effectively homeless since her own country has closed the border… the whole neighborhood has pitched in to offer her housing, odd jobs for cash, running errands for the older folks who can’t get out, lending her a car, etc.
People are being kind. And having grown up in a college town- people living in college towns are quite empathetic to students who get stuck.