Looks to me like a bezel insert replacement and you're good as new. I'd taken into an Omega AD that has a good watchmaker and see what they say. An AD can get the right OEM part, and should be able to do the job for a reasonable price.
Had my first Omega, a Speedmaster date, for a long time. A few years back I dropped it and dented the bezel on the left hand side (9 o’clock).
Just wondering if anyone had suggestions....leave it, fix it?