I have a form that I emailed out and was signed, now how so I apply my signature and give client a copy?

Hi there - Sounds like what you're trying to achieve is a multi-step approval flow. If this is correct, you may refer to the following guide: How-to-create-multistep-approvals-in-jotform-approvals/

If you are, however, referring to something else, kindly share some more information so we can assist accordingly.