XBOX, access over XboxProfil to OneDrive, Outlook, etc. (Forgotten Login)

If you no longer have access to the Xbox console on which you saved your Microsoft account, you won't be able to remove the account remotely. However, you can change your password, which will disable access to your Microsoft account on the console to which you no longer have access that way no one will have access to your data. Here's how:

1. Sign in to your Microsoft account Security page: Sign in
   
2. Enter a password if you’re prompted to do so.
   
3. Select Change password and then follow the steps.
   

Please see the following, it is for outlook and onedrive but overall is for the microsoft account

Accessing Outlook.com, OneDrive and other Microsoft services when someone has died - Microsoft Support

Hello did you follow the links to change it?

For future reference, if the email attached to an Xbox account is a Microsoft one (@hotmail, @outlook, @live) then you can not simply just change over the email address. If you try and remove it you delete the Microsoft email account and all attached services,
like outlook, OneDrive etc.

To add to this, as long as you log into any Microsoft service, using the same details as your Xbox account (email, office, outlook, OneDrive etc) then your account is classed as active. Whether you log into Xbox or not.

Ok tank you just one last question. If i delete the alias of my main account (dad email). my dad can access to outlook? (sorry for my English)

No, if your father's email is a Microsoft one (@live, @outlook, @hotmail) then removing it will delete his account and he wipl have no access to his emails or OneDrive.

We can just move the Xbox account to a another email and let my dad email access to outlook?