Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Open the Store app
At the top of the Store, is there a notification 'Included with this Device', listing 'Office Home and Student', if so, that is where you can install and activate Office from.
If not, did you swap out the drive on that laptop before you activated the included Office licence, and if so, is the original Windows 11 installation still on the original drive that you replaced.