General Settings
To get the access to the ‘Invisible Captcha’ settings, please go to Stores → Configuration → Amasty extensions → Google Invisible Captcha and expand the General Settings section.

We have to generate scre key and site for every domains, we must fill a form to get those keys.
Site Key and Secret Key – enter the values of both keys you obtained on the Admin panel in Google.
Next, you can specify the Language of the Google Invisible reCaptcha that will be used for all users instead of their browsers’ preferences. By default, this option is set to en for the English language. If set empty, Google will autodetect the language based on the User Agent data.
Theme of Captcha Badge – select the theme that will be displayed on the frontend.
Example:
