How many words should be written in each chapter of a fantasy novel depended on the plot and the requirements of the chapter. Generally speaking, the requirements for the chapters of fantasy novels were relatively high. Each chapter should have a clear storyline and character development process, so the number of words in each chapter would increase accordingly. If a typical novel required each chapter to be about 2000-3000 words, then each chapter would need about 3000-5000 words. However, the specific word count requirement depends on the story and writing style, so it's best to set a reasonable word count target and constantly adjust and improve it.