Can You Do Something About A Scrash On A Silver Coin?

So now you have a coin with scratches.
And now you know why we say "Don't clean your coins."
Highly unlikely that you can undo what you've done.

Lesson learned (I hope).

Just leave it.
Anything you try to do will just make it worse.

Don't worry about it.

I have seen lots of denarii, both cleaned and uncleaned that are much worse than yours is now.

Just remember that almost all ancient coins that been in direct contact ground burial have been cleaned.

It'll get darker with time

Ancient collectors are more tolerant of cleaning than modern collectors. We have to be given the condition they are found in.
I'd pull the coin out of that 2x2 and put it into a flip. The air will likely fix your problem over a few months.

I wouldn't worry much about it. It's a nice bust of the "thug" and after a few weeks no one will likely notice your "mistake."

But pull it out of that 2x2. Ancient collectors are more hands-on than our modern counterparts.

Now imagine if it was a 1909 S VDB that had been buried in river sand for the past 109 years.
The collectors would be saying
"What a shame !"
But it's merely 1,900 years old so we can still say
"Nice Hadrian semis !"

Well you will laugh at what I have to say probably but here goes: Silver rusts to a black Silver Oxide and that protects the coin in many respects. So people are correct, air will oxidize the exposed silver back to a more uniform character and look. But you have a decent amount of silver oxide on the coin. And silver oxide can probably be gently smoothed from one place to another with just a few rubs of your finger. It is pretty dark below the chin. Or if you had another silver coin with a dark complexion you did not care about much just rub your finger over it a few times until you see your finger turn black and rub that finger gently over the exposed silver on this coin. Of course just waiting will heal this as well as long as you allow the oxidation process.

Well done!