The apps available in the Mac App Store are not compatible with Office 2019 licenses. A Microsoft 365 subscription provides always up-to-date versions of Office apps and access to additional premium features and services. Office 2019 is the one-time purchase, non-subscription product (also known as perpetual).

OneNote and OneDrive do not require a Microsoft 365 subscription, but some premium features may require a Microsoft 365 subscription. Word, Excel, PowerPoint, and Outlook require a Microsoft 365 subscription to activate. The Office apps available from the Mac App Store provide the very latest version of Office on the Mac. What version of Office is available from the Mac App Store? * These apps were also available from the Mac App Store in previous years. Starting in January 2019, the following Office applications are available for download from the Mac App Store: Word, Excel, PowerPoint, OneNote*, and OneDrive*. This article covers frequently asked questions about the availability of Office from the Mac App Store, and the differences between downloading Office apps directly from Microsoft.

Microsoft project for mac 2012