This scenario includes a dashboard that has tabs including Single Score reports. These reports are updated in real time within a dashboard view and output a metric value. As per our documentation, It is not possible to schedule Calendar, Map, Pivot Table, and Single Score reports.
This capability is not currently supported because it is what is known as a single score report and cannot be run in a scheduled report.
It is recommended to export the dashboard to a PDF file. This will export the full dashboard with all the reports included. Please note that you must have the WebKit HTML To PDF plugin for exporting.
Please also see KB0647760 - Scheduling a single score report does not email the single score value