Correct Scipt to Use Cloudflare Acess and Show Real IPs from CF Visitors on the Server

A few years ago, we found these scripts in the Partner portal, but we no longer have access. If I remember correctly, we are looking for the server script for Argo tunneling on the server for use with CF Access and the server script that unmask Cloudflare IPs and shows the real IP of a Cloudflare visitor. We are doing a migration and that is why we need these scripts.

Thank you for any assistance.