Scrubbed a few marks out of the floor with a scrub pad, also scrubbed off the finish

Q: I was cleaning the wood floors in the apartment I moved into this week, and I scrubbed a few marks out of the floor with a scrub pad. I was able to remove the marks, but I also took the finish off the floor in a couple of the spots.

My question is: Is there any type of specific product out there that I could apply to these dull spots, that will make them appear glossy? Or did I just totally mess up these floors? Any advice would be appreciated.

A: I would rub down the entire boards or pieces affected then tape off the same boards. Apply a polyurethane (if that is the finish used) in the sheen of your choice (gloss?) and remove the tape immediately.