When you transferred a token to MetaMask wallet please check the following:
- is your token is an ERC20 token
- if it's an ERC20 did you add it in the wallet as a custom token?
- if not did you use another chain/network to send it to MetaMask
- if yes please add your custom network first, please make sure it works with MetaMask wallet. You can follow these instructions on how to add a custom chain and view your token