Good day nairalanders

Pls I want to create an Android app with sketchware, I want to add my Google ads units..have watched several YouTube videos
Actually I want to use the app for self clicking..u know make some cash before Christmas..buh every time I finish..the app will show test ads instead of the real ads..I have tried asking for help many times both on Facebook and WhatsApp..buh they all said I should bring money which honestly I don't have..
Pls programmers on nairaland help me to resolve this issue pls