The Contact Form 7 plugin is available if you wish to use that instead of the Jetpack contact form:
Go to Dashboard –> Plugins –> Contact Form 7 –> Activate.
Next go to Dashboard –> Contact –> Contact Forms.
The default contact form named “Contact form 1” shows in the form list.
Paste the copied shortcode into the page you wish to have the contact form.
Update the page.
Visit that internet page, fill in the form fields and “Send” it.
A message “Thank you for your message. It has been sent.” should appear below the “Send” button.