@sureshp89882164 

how are you printing it?

If you are doing it using ${priority} then it will show the label

you will have to use email script for this and invoke this email script in notification body

(function runMailScript(current, template, email, email_action, event) {

    // Add your code here
	template.print('Priority' + current.priority);

})(current, template, email, email_action, event);

If my response helped please mark it correct and close the thread so that it benefits future readers.