In addition to Dark Mode, Stacks, and a new and improved Finder, MacOS Mojave is launching a redesigned Mac App Store. A long overdue revision.
The Mac App Store has remained virtually unchanged since its launch in 201
One thing you can not find in the Mac App Store? System Update. They came back from where they came from.
How to Update MacOS Mojave
With OS X Lion – the First System Update to Market After the Mac App Store Exits
began posting system updates through the App Store. From Lion to High Sierra, Mac users have become accustomed to installing system updates through the App Store. If you have used a Mac long enough, you can probably remember that the system updates were made prior to the launch of the Mac App Store through the System Preferences. And that's where you find her in Mojave.
To update Mojave, you must open System Settings and click the Software Update button to install system updates. (You can also get to this point by clicking the Apple Symbol in the upper left corner, clicking [This] About This Mac and then pressing the Software Update key. )
On this page, you can also select the Automatically update my Mac automatically check box to automatically install updates. The Advanced button allows you to choose to check for updates, simply download them, or automatically check, download, and install them. Both MacOS updates and individual apps have options and security updates.
Read more: Everything you need to know about MacOS Mojave