If you are having trouble viewing your Metamask stETH balance, you may need to add the token to your Metamask as a Custom Token. To do so, access Metamask and press Add Token. Switch to Custom Token and input the values below and press Add Token to confirm.
Contract address: 0xae7ab96520DE3A18E5e111B5EaAb095312D7fE84
Symbol: stETH
Decimals: 18