Symptoms

Need Admin Approval message while configuring Microsoft Graph API Import Profile.

Cause

Not enough rights for the application.

Resolution

Please make sure that User consent for applications is allowed:

Granting tenant-wide admin consent requires you to sign in as a Global Administrator, an Application Administrator, or a Cloud Application Administrator. https://docs.microsoft.com/en-us/azure/active-directory/manage-apps/grant-admin-consent

And to grant admin consent on Microsoft Graph, you need global administrator privileges.
https://docs.microsoft.com/en-us/azure/active-directory/manage-apps/configure-user-consent#prerequisites

1. Sign in to the Azure portal as a Global Administrator.

2. Select Azure Active Directory > Enterprise applications > Consent and permissions > User consent settings.

3. Under User consent for applications, select which consent setting you want to configure for all users.

4. Select Save to save your settings.