It is possible to use your own code to fetch data from author profiles in the PublishPress Authors plugin.
There are two types of author profile field.
The first type of field are the core fields provided by WordPress. You can find the code for these fields on WordPress.org. These fields include the First Name, Last Name, Email, Website, and Biographical Info.
The second type of fields are custom fields provided by PublishPress Authors. This code below shows to call those custom fields: