Open the Microsoft Entra admin center: https://entra.microsoft.com
Go to Applications.
Select the App registrations tab.
The App registrations tab opens.App registrations page in Microsoft Entra admin center
Select the entry of your app registration.
The Overview tab of your app registration opens.Registered app in Microsoft Entra admin center
In the Essentials section you will find:
Application (client) ID which is often referred to as Application ID
Directory (tentant) ID which is often referred to as Tenant ID
To retrieve the redirect URIs:
Select the Authentication tab.
The Authentication tab opens.Authentication tab
In the Web section, you can find the Redirect URL of the server.
In the Mobile and desktop applications section, you can find the Redirect URL of the add-in (see Adding a mobile and desktop application to your app).
Result
You have retrieved the app registration properties.