IPFS stands for InterPlanetary File System, which is a protocol where various file types can be stored on a peer-to-peer network. All NFTs minted on Nifty Gateway are done so with an IPFS hash where the NFT's media data is stored. These IPFS hashes are minted on chain and are queryable within Etherscan.
To query your NFT's IPFS hash, head over the NFT's detail page and click on the contract address (as shown below).
From there, you'll be taken to a separate Etherscan window. Select 'Contract' and 'Read Contract'
Now, scroll down to 'tokenIPFSHash' and query your NFT's token ID and copy the string
You can now paste your string to the end of the following URL to view your NFT's media file stored on IPFS: https://ipfs.io/ipfs/