Since official sales ended years ago, you must rely on secondary markets or your own records:
You can view your Product ID (different from the activation key) by opening Word 2007, clicking the Office button > Word Options > Resources > About . Important Considerations How to find your Microsoft Office 2007 Product ID buy office 2007 product key
If you previously owned the software, look for a 25-digit alphanumeric code on a sticker inside the CD case or on a Certificate of Authenticity card. Since official sales ended years ago, you must
Buying a Microsoft Office 2007 product key is difficult because the software is by Microsoft and has been officially replaced by newer versions like Microsoft 365 . Where to Find or Buy a Key Since official sales ended years ago