There is no feature in kintone for making registered data public.

Depending on your license plan, you can use integration services provided by third parties.
For details on the available license plans, refer to the product website below.
Pricing (Only available in Japanese)
You can search for integration services by entering keywords on the following website.
Extensions (Only available in Japanese)

If you want to export data registered in kintone to a file and share it with users who are unable to log in, refer to the following page.
I would like to view/add/edit data in kintone without logging in