When he requested for your wallet keys, post shits, drop down irrelevant links and downloads links, send unsolicited messages or emails and promise massive return on investment if you make one with them from the scam company they promote and their NFTs, airdrops or other faie promises too much to be real.
Ignore him using the ignore button under his username below the avatar, report any to the moderators if found spamming the forum or sending you indescriminate PMs.
Don't be greedy, be patient, dont rush to make money, watch whom you follow and threads you read or comment under, avoid links referring to other sites you don't know about, dont download from their links, lastly ensure that tou always carry your own research personally on anything before going for it.