These aren't the sources I'd generally want to use, but this whole situation ended years ago. What most persuades me that the Billion Dollar Payoff never happened is that if it HAD, it would have been front-page news for months, with non-stop commentary and shilling about it. Then there'd be the immediate appeals which would likely drag on for a decade or more. Can't find a peep about any of that, thus: fake.

https://www.theodysseyonline.com/truth-billion-dollar-matrix-lawsuit

The results of the court case have been the stuff of viral legend and have been falsely reported on multiple occasions such as here and here. In reality, the case carried on for several years only to be dismissed by the court in 2005 when Stewart not only failed to show up to court but also "had not entered any evidence to bolster her key claims or demonstrated any striking similarity between her work and the accused directors' films," according to court documents. The claims that Stewart was awarded the largest sum in the history of Hollywood are indisputably false as the only funds awarded were a little more than $300,000 in attorney fees to the defendants but these were never collected.

And from Time Magazine [who?]:

Inside The Billion Dollar Matrix Lawsuit, One of the Internet’s Most Pervasive Legends

For 10 years, the story of Sophia Stewart winning a court case for basing "The Matrix" off of her copyrighted screen treatment has continuously cropped up on the web, but court documents show the story is little more than a viral legend.