Airdrops supposed to be free, but some people will demand for VIP fee, they are scammers. You will pay them but they will never give you any airdrop coins. The coin is free, you should never pay anything, only scammers will demand from you to pay.

Avoid given out your email and personal information. If you want to give out your email, then open new email strictly only for airdrops. Be careful of the email messages, phishing links can be sent to you that can contain malware link or phishing link that will demand you to enter your seed phrase and all the coins sent to the addresses the seed phrase control will be stolen.