If you’re using the Services page template, you’ll notice that the layout is unique, which means you cannot set it up by creating a standard page. If you want to use the Services page Template, you’ll first have to navigate to Pages -> Add New and create a new page, select Services Us under the template and publish the page.
Then, go to Appearance -> Theme Options -> Services Content. You’ll notice that for every service you can add an icon, title, description and Portfolio URL.
Once you’re done, make sure you click Save All Changes and add your Services page to the main menu.