Absolutely. Anything you can contribute would be an improvement. If you see a shop that’s not on the map, and you don’t have time to add anything but a point showing that it’s there, add it anyway. An approximate point in space with a name attached to it is good enough to get directions to, and getting directions is the reason I open OSM like 90% of the time. And it can always be expanded on later by people with more time and specialized mapping skills! Don’t be discouraged by the massive effort some mappers go to, just add what you can because everything you add is useful to someone