@pianoman101 Welcome to the MetaMask Community!! 
At this time, NFTs stored in a MetaMask wallet are not visible on the web browser extension. You can download the MetaMask mobile app and add your NFT under “collectibles.”
Each MetaMask wallet is device specific, so if you’ve added any custom tokens or RPC networks on your web browser extension, you will also need to add them to your mobile app.
You can read more about how to interact with sites such as OpenSea and add a NFT to your MetaMask wallet here.