If you need to update your account information—such as phone number, email, password, or address:

1.       Sign in to TurboTax and select the Take me to my return button on the main screen.

2.       Select Intuit Account on the left, and you'll see your Account Settings.

3.       Select either Profile or Security depending on which options you want to update.

4.       Select Edit next to the option(s) you want to change.

For more information please click the link.

https://ttlc.intuit.com/questions/1900724-how-do-i-update-my-turbotax-account-information