Yes, the length of a prologue can vary from a few words to a couple of pages. It all depends on the theme and purpose of your story. A prologue can be 200 words, or even more, if necessary.
Typically, a prologue is a short piece of writing that sets the stage for the story to come. It can be used to introduce readers to the characters and the world they live in, as well as to provide some backstory that helps explain why the events of the story are taking the place they are.
Keep in mind that your prologue should have a purpose. It should either introduce readers to something relevant to the story, establish tone and mood, or provide necessary context and information that will help shape their understanding of the story. You don't want to make it overly long, so stick to the important information it needs to convey.
If you're unsure about how much to write, you could look at examples of other successful prologues from popular books. This way, you can get a better idea of the "right" length for a prologue in your own writing.
Good luck with your writing!