cUSDC is like a receipt for your deposited USDC, anyone holding it can get back the USDC (+ interest) that you deposited.
If you are not borrowing anything, you are able to transfer your cUSDC from one wallet to another without any issues.
You are also able to trade cUSDC for other tokens; however, I would not recommend doing this as the liquidity of cUSDC on exchanges is relatively low. Also, something to keep in mind, if Coinbase (or another exchange) accepts USDC, this does not mean you can also send cUSDC there!