Verify and publish a contract source code

Hello, I minted four projects of an NFT And I was given an asset contract, but I am not sure how to verify in published that contract, completely out of my league, just need some help because at first I thought I got scam, pretty new to this if anybody can help me and let me know

Please consult our guide on verification linked below. Feel free to post in Developer Wanted if you want someone to do it for you.