I suppose it would be mostly practical skills, cooking, fixing things. Usually had to be done by people themselves.
Maybe also mental things like navigating (with or without paper map) and remembering their daily and weekly agendas.
What other things would be a big difference with the people today?
Even more scarce is the ability to navigate a city by simply understanding it’s road system. Give me an address in my home city (a labyrinthine nightmare to visitors) and I can just drive there without looking at a map. It’s practically a party trick now that I can tell where people live by just hearing their address. Which sounds absurd until you realize they no one ever needs to do that anymore.
Road networks in most cities in my country are like someone just dropped a pot of spaghetti. He oldest urban areas here are at most 160 years old too, so it’s not like we can blame the Romans.
Me living in a city with Roman walls:
Are you saying I can blame the Romans for not knowing an address? Cool.
Actually, it’s a rather small city. It’s hard to get lost when you can easily walk from one end to the other.