This is a scanned teleplay of a Seinfeld episode written by Larry Charles. This episode would end up being unproduced due to the cast and crew's concerns about the episode's subject matter. Any handwriting on this scan is from Larry Charles.
https://seinfeld.fandom.com/wiki/The_Bet
“The Bet” (also known as The Gun) is an unproduced episode for Season 2. It was not made due to its controversial subject. It would have been the fourth episode of season 2, and would have aired on February 13, 1991. It was replaced by "The Phone Message".
the seinfeld episode you should be reading is the one about 9/11
someone posted it here on hexbear but I can no longer find it
here it is elsewhere https://www.avclub.com/read-this-a-darkly-comedic-seinfeld-spec-script-set-da-1798250195