Step 1: From the admin left panel, click on Settings.
Step 2: From the options that open, select App Categories.
Step 3: The interface that opens will show a list of apps separated by categories.
Find the app category you wish to change the name of and click Edit.
Step 4: This will open up a pop up. You can enter the new name in the field under Title.
Step 5: After entering the new name, click save. Your app category name will be successfully changed.