Hi,
I am not the expert for the HikaShop report system but I know that you can make a "top sales" report.
With the "display listing" type, a "date type" to "created" for the period you want (last 7 days) ; the type "products" will allow you to list only the products.
You won't need to use a lot of filters (except for the order status).
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.