How to share my form link with only specific mail id?

You can grab your form's direct URL and share it with any desired email address. You may like to take a look at the following guide on how to grab your form's direct URL:   https://www.jotform.com/help/401-Where-to-Find-My-Form-URL

You can also share your form with users from form itself. You may like to take a look at the following guide which should help you:   https://www.jotform.com/help/303-How-to-Send-a-Form-via-Email

Hope this helps.

Do get back to us if you have any questions.