The 2020 AP CS A Exam was adminstered online. A complete collection of the free response were never released. The free response below are from the 2020 AP CS A Course Description.
2020 AP CS A Course Description Free Response Solutions
2020 AP CS A Course Description
The sample free response start on PDF page 206 (labeled page 199 at the bottom right). If this link has been redirected to the 2025 Course Description, please let me know as a comment on this page.