Value means how much value you provide to the customer.
For example, providing a platform to watch/upload content like YouTube.
frequency means how much people are going to use your prodect (extimate)
x.com is an example of a high-frequency, high-value product.
If you are building a product, you must check if your idea is good or not.This is a good way to check to make sure your product is not in the category of low value, low frequency.
You must be on the top column.