Create a new page and assign the “Contact” template to a page:
You can create an unlimited number of contact forms for your site by activating the Jetpack contact module and using the contact form generator:
Jetpack > Settings > Contact Form
You can then insert your contact form with the “Add Contact Form” button in your page editing screen:
To add a full width Google map to the top of your contact page, navigate to the customizer contact page settings and add the address you’d like to display in the map:
Appearance > Customize > Contact Page
Google now requires new websites to have a Google Maps API key. You can request a key here