Colored Label Manager improves your experience using labels in Jira. It provides a simple control panel which allows you add color to your labels and understand where your labels are being used in your Jira instance, as well as powerful functionality to cleanup and organize labels in bulk.
Global Jira labels
Only Jira administrator can access Global Jira Labels
Go to Settings
Click on Apps
Open Colored Labels from the left sidebar
This is a list of all the Jira labels used in your Jira instance. The second column shows you how many times a label has been used. Clicking on that link opens a new tab with a filter that shows all issues with that label in your project.
INFO
If a label is used on an issue that you do not have access to, it will not show up here and will not be counted.