By default, the widget texts are in English. To translate the texts in the widget to your preferred language, please refer to the following guides.
Changing default text across all widgets - https://help.kudobuzz.com/changing-default-text-across-widgets/
Changing default text for specific widgets - https://help.kudobuzz.com/changing-default-texts-for-specific-widgets/
Translate your review form to other languages - https://help.kudobuzz.com/how-to-translate-your-review-form-to-other-languages/