Well, there's no fixed length. A good rule of thumb could be to aim for around 2,000 to 3,000 words to keep the readers engaged without overwhelming them. But if the plot demands it, you can go shorter or longer. It all comes down to telling the story effectively.
It depends. Some fanfiction chapters can be as short as 1,000 words, while others might go up to 5,000 or more. It really varies based on the story and the author's style.