Contact is a custom page template.

To replace the theme contact page with contact 7 contact – please see this help: http://help.wpresidence.net/article/contact-7-for-contact-forms/

You select the custom page template as in below screenshot:

Page looks like this – https://wpresidence.net/contact-us/

Contact page details are set in theme options:

 

Social accounts are set in Social & Contact

Replace the skype icon with a different icon through css. Add below css to CUSTOMIZER or in CHILD THEM

.page-template-contact_page .agent_detail .fa-skype:before {
font-size: 15px;
content: "\f017";
font: normal normal normal 14px/1 FontAwesome;
margin-right: 3px;
}