please check for the following link for a very basic example of such a report using classic ABAP:
First Thing you need to know is ABAP is not a module.
ABAP is a high level program created by SAP, ABAP can customize modules which contains in SAP, Find in this link : LIST OF MODULES
Follow This SAP ABAP Tutorials: Playlist
I hope you will find the Solution,
Reward It, If it helps you 🙂