@Pavel yannara Mirochnitchenko Thanks for posting in our Q&A.
For this issue, I have done the test in my lab. When I access MS Store for Business and search "Company Portal", I can choose oneline or offline app.
It is needed to active "Microsoft Intune" if you want to sync the app from MS Store for Business to intune. Then I can see the offline app listed in intune portal.
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