Filter and display all commerce product sales by date in a block?
You need to do some advanced Views building to make this happen, so if you've never used Views aggregation (formerly I think it was called "group by"), then I'd recommend looking into video tutorials on the topic.

Basically, if you start with a View of Orders and turn on aggregation (under advanced settings), then you can add two fields to the View:


Your custom date select field using "Group results together" as the aggregation type.
The Order ID using "Count" as the aggregation type.


Fiddle with it from there to get it to look like you want, probably using an unsorted list display format with the fields set the show up on the same line.

Here's a quick working export of a View that groups orders by user and shows the number of orders per each user (courtesy of joshmiller): http://pastebin.com/j7NTrkp9