Where is the path to your XML Sitemap when using Multisite Sitemap or is one not created?

Hello

When using the MultiSite and Infinite SEO plugin in settings on the Infinite SEO plugin under Sitemap setting it ask you for the path of the XML Sitemap. I looked in file manager and could not find the path to the XML Sitemap file? So, my question is where is the path to your XML Sitemap file? I know the XML Sitemap URL is displayed.