Dear mel bev
Welcome to Microsoft Community.
Here I see that your question is not how to change the password of Microsoft account?
You can refer to the following process:
Visit the Microsoft Account Control Panel and sign in with the username and password for the account you want to update, if you are not already signed in.
Select “Security” from the navigation headings as you are accessing sensitive information and will need to enter the password for that account again.
From the Password security tile, select Change My Password.
On the Change Password screen, enter your current password, and then enter a new password.
For added security, select the optional check box that prompts you to update your password every 72 days.
Select Save.
If you are unable to change your password in this way, see the:Change your Microsoft account password - Microsoft Support
Feel free to post back if you need further assistance.
Best Regards,
Chris.S-MSFT | Microsoft Community Support Specialist