if I had 20 billion at first I would help my parents at first as they always did everything they could for me and then I would use the rest to buy a house and a car. Then I would buy clothes makeup and shoes. If still I would be left with money then I would hold a party for for bffs and then make my enemy jealous by showing off all expensive clothes bag and college accessories. I would even buy my crush a gift and then confess my love to him. If he denies then I would take back his gift😈😈