To display it in the Topbar, please enable it in the theme Topbar, Header settings and configure social media options as shown in the attached screenshots.
The theme doesn’t provide any option to add it in the header nav.
If you are not a developer then you can consider hiring a developer to develop it for you. You can hire a developer from any freelance site. Shufflehound recommends the developer https://www.upwork.com/freelancers/~011652ffec8865c6d5