I took typing my freshman year of high-school (87-88 school year) and on an IBM Selectric typewriter I got up to around 40 wpm. A few years later I took a keyboarding class in college and got to somewhere around 70-80 wpm. I haven't tested my typing speed since, so I really don't know what it is these days. I rarely make it a point to try to type as fast as I can, and because I'm frequently switching between different computers, with different keyboards, I doubt I'm anywhere near my peak potential speed. If I was forced to guess, I'd say it might average out to something like 50 wpm.
As fast as ChatGPT can respond, and I am using my microphone.