I agree with Solar Mike. The crankcase has a reservoir of oil to supply the engine with the oil it needs. It is unlikely you wore out any parts at all under normal driving.
Years ago, my family owned a car that consumed oil. One time, it lost three out of five quarts of oil as we drove it locally (no oil at all could be seen on the dipstick). No damage was sustained. A few years later, it lost four out of five quarts and at that point, after highway driving, it developed a nasty engine rap at idle (probably wrist pin damage).
I've read that running an engine for sustained periods with one quart (out of five) low is not good. The engine runs hotter because about 15% of the engine's heat is dissipated through crankcase oil. Less oil means less heat transfer and therefore higher than usual engine temperatures. Even so, it would take tens of thousands of miles to cause accelerated wear.