I'm Brendan, a Shopify Guru.
This information can be found in the reports section of your store's admin by navigating to Reports > Sales > Sales by product variant SKU. This will display the number of items sold, as well as the dollar value of items sold for each variant in your store.
We also have a help topic that goes into more depth on store reports here.
Hope this information helps! Please reach out to the Guru team if you have any questions.
Report Pundit can fetch Sales report by Size and Style.
The report can be viewed onscreen or exported within a few seconds.
We have a pre-created report. You can also select additional fields required in the report.
Contact us if you need help in creating a report at email@example.com