When filtering the column of Category, you can see here that there is an option to search through your items using the items Category ID.
This article will show you how to find the Bigcommerce Category ID field in order to use this tool correctly.
Firstly, you will need to be logged in to your Bigcommerce account.
From here, you will need to click on: Products > Product Categories.
This should then bring you to a screen that looks like this.
In this example, we are trying to find the category id for our Mobile Phones, so we then click on the link of the category we are looking for
This then brings up a screen that should look like this. At the end of the URL in the search bar, you will see, "https://store-.........&catId=" the number at the very end will be the associated Category ID.