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Click Label It for Jira in the left-side menu for each project. You can view a list of all Jira labels in the project-level.
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[NOTICES] Case of Labels and Issue counts
Labels are case-sensitive, but in the Issue count view, they are combined and displayed as one.
For example, if the Label "Moon" and the Label "moon" are used in 10 and 5 Issues, respectively, the Issue count for "Moon" and the Issue count for "moon" are combined to show 15 Issues each.
Please note that this is due to the way Atlassian API is implemented.
3-2 Show Issue Count
Tap the 'Show issue count' icon at the top of the list of labels to see the total number of issues along with the number of issues using each Label.
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