You have done this dance before, but let's do it again. In MetaMask, under the "Tokens" tab, click "+ Import tokens":
Click "+ Import tokens"
Paste in the USDC contract address on Sepolia and click "Next":
Importing Sepolia USDC token
On the next window, you will see the USDC token and it already has a 0.1 balance for you account! That was from our CCIP transaction previously. Pretty cool! Click the "import" button at the bottom:
Importing the Sepolia USDC token
Back at the "Tokens" tab you will now see your USDC token and balance: