I do not understand exactly what sort of number you were hoping to see on your report.
Can you rephrase your question?

You might find some helpful information in the Custom Reports tutorial:
https://skyline.ms/_webdav/home/software/Skyline/events/2024%20Webinars/Webinar%2023/%40files/Skyline%20Live%20Reports.pdf

If you want to create a report which includes columns which are calculated by summing values from a longer report, you might find the Pivot Editor tip helpful:
https://skyline.ms/wiki/home/software/Skyline/page.view?name=PivotEditor
-- Nick