How to put bitcoins into Binance account and not lose it?

Please give me some advice for dummies.

All I have are two codes from the time I bought some bitcoin (years ago, now it's worth between 100€ and 1000€). One of the codes is the one I can paste here: https://www.cointracker.io/wallet/bitcoin and see what's there. I have no idea what to do with them. I won't risk with P2P. I made a Binance account now. What exactly do I have to do to put it there (in order to withdraw it)? I watched some short video and there are like so many options I don't understand and warnings I'll lose it if I click on the wrong thing.