The SCAP content page is a part of the OpenSCAP plugin and will only exist if this plugin is installed on your orcharhino.
See also the OpenSCAP Plugin form the Plugin Guides chapter.
The SCAP content page can be accessed via The Hosts Menu:
Hosts > Compliance > SCAP contents
SCAP content refers to a specification of a security baseline for hosts to comply with.
SCAP content is given as an XML file in DataStream format.
See the SCAP Content Page subsection of the OpenSCAP Plugin guide for detailed documentation on this page.