You can use Read Range activity to read the excel file
Use For Each Row activity to loop into the Datatable generated from Read Range activity
for reference you can visit below
https://forum.uipath.com/t/tutorial-how-to-check-a-string-is-present-in-excel-sheet-part-1/243696/2
Once you are ready with For Each Row activity, You can place different logics inside the For Each Row
You can use TypeInto activity to type, Get Text activity to get the text from SAP application Etc.,
Before all the for interacting with SAP from UiPath, do below steps
Hope this helps you
Thanks