Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Log into your Microsoft Account on this link, do you find your Office licence or subscription listed there, and if so, are you able to install the Office apps from there.
https://account.microsoft.com/services/
If not, what version of Microsoft Office do you have, is that a subscription to Microsoft 365 or a standalone version of Office like Office 2019, 2021 or 2024.