There is no monetization component on App Inventor 2 but we can use enhance extension.

What is Medaition

AdMob Mediation is a feature that lets you serve ads to your apps from multiple sources, including the AdMob Network, third-party ad networks, and AdMob campaigns. AdMob Mediation helps maximize your fill rate and increase your monetization by sending ad requests to multiple networks to ensure you find the best available network to serve ads.

https://developers.google.com/admob/android/mediate

Cons

We need reach every ad company payment threshold for receiving payments

Lets Start

Open Admob acoount and find Medaition Tab

Create new mediation

Select ad unit

Add your ads provider informations.

select ECPM value

Medaition setup complete for ad unit

Copy ad unit id . ( ca-app-pub-xxxxxxxxxxxxxxx )

Now its time to implement enhance extension.Download it from here

You can download it throught offlical website.
enhance.co

Uygulamamıza Enhance.co eklentisini ekleyelim.

Here simple block logic for show insterstitial ads.

Use ServiceTErmsOptINAll block for apporove GPDR.Dont forget ask user for permission !

Bu kadar bloklama yeterli.

İmport Keystore to Enhance.co

We need sign our app with our keystore

Export keystore from ai2

Fill required informations.Select your downloaded keystore

All okey 🙂