Since it can be difficult for crypto enthusiasts to assess the real value of a token, the NFT floor price was created just for such cases. You can learn more about what the NFT floor price is and how it can be used in this article https://blog.alphaguilty.io/what-is-floor-price-nft . It covers everything pretty well, starting with the basics, and you can also read the full guide on how to create an NFT.