How many people knew Bitcoin in 2009 and how much was it worth in 2009?
Use google and other search engines to learn more about the history of Bitcoin if you are interested in such things. You can even explore old posts on this forum dating back to that time.
If someone bought Bitcoin in 2009, is that buyer rich now?
It depends on whether he sold his coins and when he did so. But from what I know, almost nobody was buying Bitcoin back then since it was easily mineable with just a computer.
Bitcoin now stands at 26,893 and was it lower in 2009?
What do you think?