Contact Us page is listed at Page section in to backend. Different widgets areas for this page are: Contact Page – Main Content and Contact Page Sidebar
Address on Google map can be changed from the Contact Page – Main Content -> T – Google Map Location widet. Similarly, T – Contact Us widget is used to show the form. Captcha can be enabled to from the option “Enable captcha” in to the widget (Wp-reCaptcha plugin should be activate).
Mail on the Contact Us page is sent to the mail ID provided into WordPress General Settings -> Email field.