Is CiviCRM among the 1-click install list?

CiviCRM is not something offered within Softaculous as it does appear to be something that runs on top of various content management systems such as Drupal, Joomla, or Wordpress. Drupal, Joomla, and Wordpress are, however, available within Softaculous for an easy installation, but CiviCRM is something that would need to be installed on top of one of these. I was able to locate their official support documentation which should guide you though the process.