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?
Want to say general automotive competency. As in you had to deal with carburetors on cold days so you had to adjust intake, spray starting fluid into it, know about oil pressure and warming it up, etc. Some people are barely able to conceptualize putting gas into the thing now.
Knowing the prices of typical appliances and such. Example, modern The Price is Right compared to the 80s and before. 50 years ago, people were more likely to know the prices for a multitude of reasons, one being there were more home owners in those generations who might be looking at replacements or upgrades. Now, home ownership is less and I couldn’t begin to tell you the price of a washing machine being a renter.
Also, there were like 3 washing machines on sale. Now you have 50/manufacturer.