I surmise only a fraction of those who have been sexually abused were willing to go public, so it's not unreasonable that Trump could have sexually assaulted hundreds of women.
https://www.businessinsider.com/women-accused-trump-sexual-misconduct-list-2017-12?amp
https://www.businessinsider.com/women-accused-trump-sexual-misconduct-list-2017-12?amp