The Sales by SKU report lets you see your sales for each SKU, by sales channel, during a set time period. Only Paid orders will appear in the report. Canceled orders will not appear.
To run the report, first enter your Starting and Ending order dates. Only orders taken during this period will appear in the report.
The report may take a minute to generate, but when ready you'll see a graph depicting the performance of each sales channel, as well as a chart with the raw data.
If you wish to manipulate the data further, or save the report for future reference, you can export the raw data to CSV. Learn more about exporting reports to CSV here.