How to install Kodi Add-on repository?
Kodi Add-on repository is available in the official Kodi repository which is included by default in Kodi. You can install this addon by going in Kodi to System >> Settings >> Addons >> Get Addons >> XBMC.org Addons or Kodi.tv Addons
About SuperRepo and Kodi Add-on repository
SuperRepo does not maintain Kodi Add-on repository. We only provide an automated index for Kodi users to have easy access to Kodi Add-on repository and other addons for Kodi. We are not affiliated with the developers (XBMC Foundation) and do not provide help for this particular addon.