https://portal.azure.com/#blade/Microsoft_Intune_Apps/MainMenu/11/selectedMenuItem/Overview

portal.azure.com > Intune > Client apps > Microsoft Store for Business
Enabling Microsoft Store for Business sync lets you access volume-purchased apps with Intune: Enable
Open the business store (new Internet Browser)
Sign in with Global Administrator account
Manage > Settings > Distribute
Management tools and Activated Microsoft Intune and Microsoft Intune Enrollment
Settings > Shop
Shopping experience: On
Go back to Intune > Client apps > Microsoft Store for Business
Choose you language
Save and refesh the page
Sync
Note: Sync will take some time

Manually add the Windows 10 Company Portal app by using Microsoft Intune

Go to portal.azure.com > Client apps > Microsoft Store for Business
Click on link “Open the business store” and sign in with Global Administrator account
Search for Company Portal app and then select.
Set the License type to Offline.
Select Get the app to acquire and add the offline Company Portal app to your inventory.
On the Company portal app page, select Manage > Products & services
Select Company Portal and wait about 3 seconds.
For Platform, select Windows 10 all devices, and then select the appropriate Minimum version, Architecture and Language.

Select Download to save the file to your local machine.

Download the Microsoft.CompanyPortal AppxBundle and move to another folder. Example: C:\ Company Portal
Make a new folder in Company Portal named Dependencies
Download all the packages under “Required Frameworks” by selecting Download.
This action must be completed for x86, x64, and ARM architectures. Place the dependency packages in the Dependencies folder

In Microsoft Intune in the Azure portal, upload the Company Portal app as a new app.
Go to portal.azure.com > Client apps > Apps
Click on Add
Select “Line-of-business app”
Upload the Microsoft.CompanyPortal App
Upload the dependency app files
Select App information
Change the name and description to: CompanyPortal
Select category: Computer management
Display this as a featured app in the Company Portal: Yes
Upload the portal Logo

Assign the Company Portal app as a required app to your selected set of target group.