Yes, you may be able to sue if a scooter rider hit you and caused injuries—especially if they were riding illegally or acting recklessly.
In California, riding electric scooters on sidewalks is generally prohibited, and riders are supposed to yield to pedestrians. If someone:
…they may be held personally liable for your injuries. In some cases, if the scooter was a rental (like from Bird or Lime), we may also investigate whether the rental company shares any liability—for example, if their app didn’t warn the rider or the scooter was malfunctioning.