You can query post orders by custom fields using the Post Grid Combo plugin. This article will show you how to query post orders by Custom fields.
Click on the “Query Post” tab.
You can now search for the “Meta Fields Key” by clicking the Choose button. Now click on it.
And from the “Meta Field Key” drop-down tab, enter the “meta name.”
From the Orderby drop-down tab, select “meta_value” or “meta_value_num.”
And on the Order tab, you can change the order to ascending or descending.