You cannot make the data created in kintone public.

As an alternative, you can use the integration services provided by other companies if you have purchased the Standard license plan.
Check if there is a service that meets your needs by accessing the Extensions page and searching for "Public" or other keywords.

If you are considering other scenarios, such as exporting data created in kintone to a file and sharing 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