From form, to Excel, to 2nd Excel

Hello,  I'm having issues understand the Power Automate process.  I have a Teams Group, and I created an Excel file (file A) and then created a Form to feed into that file.  I need the data from file A to populate another excel file (File B) whenever a form is submitted to file A.

But there is an exception.  I need just a few of the cells in each row.  Not all.  

Form ---> Excel A ----> copy to Excel B

Any help?  I think if I can see this in action I can follow for other projects.  Thanks again for your help and advice.