I have to say that these days, the generic statement "they have a captcha," isn't particularly useful simply because there are a number of different captcha mechanisms in active use, and how one handles each of them is different. Most also now have an alternative to any of the most common and standard visual challenges that require the use of point and click, and those are usually presented as a link that needs to be activated to start the process.
But without either a URL where someone trying to help could at the very least encounter the captcha method being used, it's virtually impossible to give any sort of generic advice on captchas as a class these days.
Brian - Windows 10 Pro, 64-Bit, Version 20H2, Build 19042
The depths of denial one can be pushed to by outside forces of disapproval can make you not even recognize yourself to yourself.
~ Brian Vogel