Exporting requests allows you to share them with others, who can import them. None of your account or base data will be exported, just the details of the API request and output settings.
Export requests as JSON file
On the home screen, hover over the requests you want to export and click
Click the download link on the dialog that opens.
Be careful if there are API secrets or other sensitive data in the requests you export. You probably want to replace them with variables first, so that only the variable names are exported, not the actual values.