@Rowén0 Airbnb won't "change" ratings. All you can do is ask that the review be removed if it violates review policies- look these up, so if a review does violate any of these, you can point that out to Support, quoting the exact violation. These include extortion, discrimination, mentioning an Airbnb resolution process regarding refunds or damage claims, etc.
Also, you can post a response to the review, making it clear that the review is false. Just keep the response brief, professional and factual, no emotion, and not violating any of the review policies yourself. For instance, don't say the guest is lying, just state the facts that show them to be not honest.