Having created a list, you just need to open the list view and choose the list you want to export. When clicking on the button, you can choose if you wish to receive the file in a CSV or Excel format.
Export files include the following parameters:
Handle
Country
Fullname
Followers
Engagement rate
Audience demographic distribution
Top 3 countries (and cities for Instagram)
Interests
Follower credibility rate
Average likes
Average comments
Contacts(if available)