How to Change Roblox Password on Xbox?

How do I Change my Password? – Roblox Support

Log into your account.
Go to account Settings .
Select the Account Info tab.
Select the Change Password button icon looks like a pencil and paper
Enter your current Roblox password.
Enter your new password twice for confirmation purposes.

I Forgot My Password

Select Forgot your username/password? on the Login page.
Enter your email address in the Email box exactly as it is on the Roblox account and press the Submit button.
Press the Reset Password button or click the link in the email.
Enter and confirm your new password, then press the Submit button.