An NFT is a digital equity that is equal to art, real estate and is becoming a  popular way to buy and sell digital artworks. They are designated with unique identification codes and metadata that differentiate them from other tokens. NFTs are available in some digital form everywhere in integrated versions of digital art that are already fluttering all through Social media.
The NFT marketplace is a place to buy, sell, and trade all the NFTs more authentically. They usually charge gas fees for each transaction and provide various tools and features to make sure the transactions happen more easily and securely. NFT marketplace script is a sequencer that helps you build your marketplace which usually contains more configurable prototypes, secure payment gateways, smart contract implementation, and other tools to provide easy trading of NFTs.

I think that it is not the time to invest in NFTs at the beginning because of the novelty it became popular but as time has passed I don't think it is there, the market is large but the various situations and volatility allow you to win or lose very quickly