@Vinod Survase Thanks for posting in our Q&A.
To clarify this issue, we appreciate your help to collect some information:
1.Which app type you deployed?
2.Which assignment? Required assignment or Available assignment? If it is available assignment, you need to deploy this app to a user group and sign in the company portal app to install this app.
3.Please check if there is any app installation error code in intune portal.
If there is anything update, feel free to let us know.
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