Sex harassment is crime in US, if top management knows; he will be fired right away.
You need to collect the evidence first. Be strong and be yourself.
Suggest: send him e-mail states the things happened, and tell him you wouldn’t tell anyone any more, if he promise not touch you again. If he response, that is the prove.
Don’t think law sue or money. It is long process. But for sure, the fed lawyers were looking for some of the cases.