How do I get the katalon to verify the image below
you may try some sort of OCR scanning but i doubt will work, the images are biased on purpose, to avoid automating (bots abusing the app)
usually, for captcha testing the developer of the AUT should implement a ‘test mode’ where the answer is a known key or a meaning to disable it.
see fore example the faq here for v2 and v3:
https://developers.google.com/recaptcha/docs/faq
Thanks bionel