I need to install SSL on EXEOUTPUT and dont know how.
What do you mean by you need SSL? Do you need cURL to connect to HTTPS websites?
By default, the internal protocol used by applications is HTTPS
Our documentation has a topic about HTTPS and thus SSL:
Accessing secure websites with HTTPS
https://www.exeoutput.com/help/working-with-php/curl/#accessing-secure-websites-with-https