Firstly, you need to add the links of Social Profile. To add the links of the social profile, follow the steps listed below:
- From your WordPress Dashboard, navigate to the Users > Your Profile
- Add the Social Links in User Social Links.
- Then, Click on Update Profile.
To enable the social profile links of author:
- From your WordPress Dashboard, navigate to the Appearance > Customize > Content > Single Post
- Locate Author Bio.
- Put a checkmark on Check to show the Social Profiles in the Author Bio.
- Click on Publish.