Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Sorry, but this is a user-to-user forum which is text-based. Nobody here will be able to offer you phone support.
There is a support chat at https://support.microsoft.com/contactus . Note that getting assistance from your peers in the forum is usually faster, though.
If Office is installed, start Word and click File > Account. Does the Office product indicate that it isn't activated?