How do I take a field from one form and add it to a new form?

I have worked on a field that i did lost of condtional logic with that i want to bring to another form, can i do that ?

You can clone the whole form itself, then you can edit the cloned form from there. Here's how you can clone forms:

https://www.jotform.com/help/27-How-to-clone-an-existing-form-from-your-account 

https://www.jotform.com/help/42-How-to-Clone-an-Existing-Form-from-a-URL 

If you do not want make a copy of the whole form and just copy some fields to another form, then that is possible by using this application: https://apps.jotform.com/app/field_manager.

I hope that helps.