Hi,
HikaShop has reporting tools included that you can use to get what you want.
In the menu Orders>Reports, you can create a new report and configure it to get the report you want. For example:
i.imgur.com/XUjiw5s.png
This gives me a report of the 50 most sold products, regardless of the period, based on orders with the statuses being either "created" or "confirmed" made in the EUR currency.
Then, it's up to you to adapt the settings to your needs.
