Nice timing on selling your cards since prices continue to be in a downtrend.
You can read about the Airdrop here https://sorare.com/en-gb/blog/starknet-provisions-a-surprise-gift-for-sorare-managers-from-the-2021-22-season

It's the same 111.1 STRK for all Sorare managers (Expected to be worth somewhere between 100$-200$). Not sure when it will actually be dropped though and you will need to create a Starknet wallet. Right now I believe it's just possible to check if your account is eligible for it.

you can claim your tokens starting Tuesday, February 20th at 12PM UTC and until June 20th 2024.