How can I close Apple TV account on MacBook Pro?

Your Apple TV account is your Apple ID. The only way to close that is to entirely delete your Apple account and all its data and contents including any purchases, files and photos on it. Are you sure that is what you want?

If you mean you want to cancel a subscription to the Apple TV+ service, then follow the steps in the links below.

click here ➜ If you want to cancel a subscription from Apple - Apple Support

or here ➜ How to cancel Apple TV+ - Apple Support