1) Scroll down the Control Panel and click 'Export Data' under the 'My Site' heading.
2) Next to 'Choose export type' , select 'Categories' from the drop-down menu.
3) Select 'Include all categories' or you can filter your category export data by date.
4) Select your preferred 'File Format'.
5) Under 'Filter By Category Parent' select the category you'd like to export, if you'd like to export all category data select 'None'.
6) Click the 'Export File' button.