Hi there,
its not something we would build into GenerateBlocks
To do this kind of thing, requires a custom function to count post views and write them in the post meta or to a separate database. As this is not something that WordPress does. And probably for good reason; it means every time a post is viewed the database has to be queried. Which on a large or busy site could lead to a tonne of post queries, and if the data is stored in the post meta it means that post is constantly being updated. It could absolutely murder the performance of the site.
If its a must have, then ask your current plugin author if the have a function that can return the IDs of the most popular posts, or whether there is a meta key that can be used to get the view count.
If they do then with that plugin installed we can write a custom filter to get GB Query Loop to show those posts.