How we can pick/show the value in the label or snippet?

Display a value from the the database table in the label section – Is there any way to achieve this in general.  
1 answers

What you exactly mean by label section? If you want to display some text as label/heading anywhere but the value should not be static string and it comes from some attribute of an entity. For this purpose, you can use simple text widget which can have parameters added to it. Use parameter placeholder like {1}, {2} in your message string and add parameter no.1 and no.2 to fill up the placeholders. You can choose attributes from entity that is available in the context. That means your text widget should be inside a data container like data view.