Hello @vandergoulart
To create and edit the social menu, please do the following things,
– Go to Appearance > Customize > Menus and create a Menu name Social.
– Social Menu will appeared on top of side or you can use social widget for sidebar.
– Add the link for social Menu(Use Custom Link to create this menu)
– In custom link, add link for Facebook Menu(www.facebook.com/username)
– Add the menu and follow the same steps for twitter, Instagram.
– Select the Social Menu for this.
If preview is fine, Click on Save & Publish to save the changes.
Please refer this docs for more idea. https://docs.candidthemes.com/fairy/
Hope this helps.
Thank you