Happy Wednesday, @mbsalon808.
I hope you're having a great day. You can change your user name, password, phone number, and other account information by going to accounts.intuit.com. The login for this website is the same login you use for QuickBooks Online. Once you log in, you can edit all your account information and click Save to confirm the changes.
If you have any other questions, feel free to hit the Reply button. Enjoy the rest of your day!