I have set the robot detection on form as true following the doc on https://doc.sitecore.com/xp/en/users/93/sitecore-experience-platform/work-with-robot-detection-for-forms.html
Then I created a selenium python script to submit the form. Its able to submit form without any issue.
My question here is how to validate/verify if robot detection is actually working or not?
Ensure that your instance is Standalone or ContentDelivery, as if you review Sitecore.Analytics.Tracking.RobotDetection.config the robot detection pipelines don't run on the ContentManagement role.
If you don't trust the robot detection or if it is not giving you the right functionality, you could always try and use a Recaptcha.
Sitecore Forms Extensions uses a Google Recaptcha component. http://onelittlespark.bartverdonck.be/sitecore-forms-extensions-for-sitecore-9-3/
In cases of my projects I had issues because of GDPR laws. It restricted the use of cookies if someone does not have accepted the cookies. This will cause Sitecore to always see a visitor as a Robot since there is no cookie to validate it with.
In order to know does Sitecore thinks the user is human, it saves true or false value to cookie SC_ANALYTICS_GLOBAL_COOKIE.
For example if the value of cookie SC_ANALYTICS_GLOBAL_COOKIE is: ef86f68776cf417db46dd217cc60807d|True
Sitecore thinks the user is human. If the value is false Sitecore thinks it is a robot. You could try to read this value with the same python script and see does Sitecore thinks its a robot or not. If the value is false(robot), the problem probably lies in a form itself.
