how to auto populate one fields values from form to other forms

Hello kiranmmai,

You can read on this user guide for proper guidance and instruction on how to populate field values from one form to another: https://www.jotform.com/help/351-How-to-Automatically-Pass-Form-Data-to-Another-Form

The thread by the way is quite lengthy, so if in any case you need further assistance, please let us know.  It would also be great if you can share with us the links to your forms and the things you would like to do.

Warm regards.