Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
This is just an FYI for everyone with this question:
If you have a valid product key for Microsoft Office but do not have software, you can download the 32-bit version of Office using Microsoft's download links. However, Microsoft does not make the 64-bit version available for download. They have not made 64-bit downloads downloadable for many years now, and it seems they have no intentions to changing this. Why they do not allow 64-bit downloads is a mystery.
I used to be able to contact installation support for help getting a 64-bit download. They would confirm my product key and provide a download of the 64-bit installer. For Office 2019, however, support refused to provide an installer for my valid product key. They did not provide a valid reason for not providing a download, and I assume it is due to a sub-contractor for MS who simply did not want to do it. He basically stated that he cannot due to Office being commercial software. I had a valid product key that I purchased, so this reasoning made no sense.
What I think needs to happen is that the Office install site must support both 32-bit and 64-bit downloads for all valid product keys. It only provides 64-bit downloads for some product keys and not all. It does provide 32-bit downloads for all product keys.