How to send to user a copy of submitted data?

2 - After submission is there a way to directly send a copy of the submission to the client that filled out the form?

Yes, you should add an email auto-responder to your form, then a copy with the submitted data will be sent to your clients, for more details, please check the guide about Creating-a-Form-Autoresponder.

If you have any question, please let us know.