There is no awork App for the app store. But some browsers (e.g. Chrome or Edge) allow you to install webapps like awork as an app.
Open chrome and head to your workspace. Now click on the three dots on the top right. Select "More tolls" and "Create shortcut".
Now a pop-up appears and you can select a name for the awork app. Check the "open as window" box to open awork as "app". Otherwise it would open as a browser tab.
Mac: Now the finder opens with the folder "Chrome Apps". You can drag and drop awork into your dock and use it as an "App".
PC: awork now appears as a recently installed app in your start menu. You can pin it with a right click to your start menu or the task bar and use awork as an app.