What is this page?

I believe, if it checked and all good, then it should pass to the requested resource/webpage.

Moreover, if it is a captcha, then if you as a human cannot successfully complete the captcha challenge it goes again once more - possible to be in a “loop” until you successfully complete it.

Otherwise, should show an CF error like “1010 The owner of this website has banned your access based on your browser’s signature” (browser integrity check), “1006 Access Denied: Your IP address has been banned”, “Access denied (Error: 1020)”, etc. or some similar due to the Firewall rules and other security options being enabled.

https://support.cloudflare.com/hc/en-us/articles/360029779472-Troubleshooting-Cloudflare-1XXX-errors