A Microsoft file hosting and synchronization service.
Dear No Profile Name
Welcome to Microsoft Community.
We understand that you want to install only OneDrive on your Mac.
According to your description, you have subscribed to Microsoft 365 Family products, but do not want to install Office programs on your Mac and only use OneDrive programs. We need to explain to you:
OneDrive and Office, such as Word, are separate download links. After you subscribe, you can download OneDrive separately on your Mac and log in to your account.
Microsoft 365 Family: You can log in with 6 accounts including your own account, and each account can enjoy 1TB of OneDrive space.
If you log in on your Mac with a subscribed account, 1TB of OneDrive storage will also be displayed; if you log in with another account, you can also share the Microsoft 365 subscription first to ensure that OneDrive has 1TB of storage.
You can use the information in the Apple Store or the following link to help you install and log in to OneDrive:
OneDrive release notes - Microsoft Support
You can try it, if other information appears, you can also share the Mac version and more information with us to help you further confirm.
Best Regards,
Zenobia.Z | Microsoft Community Support Specialist