Wax would probably be a benign treatment to diminish the gouged look. A circle of glass on the top of it wouldn't be bad, actually, but it would make it a bulkier table if you ever want to move it.

My ex took apart my small hall table and I've never gotten around to reassembling it. The marble is sitting in the middle of a kitchen counter with things sitting decoratively on it. He wiped out several of my antiques, though he meant well. The finish on a little old round oak kitchen table is gone on top but not on the rest of the piece. Took apart a rocker, took apart a lamp, took apart this table. This wasn't helpful and I asked him to stop taking things apart.

I haven't managed to reassemble any of them, though I think I still have all of the parts.

SRS