1) You would gamble with it again, trying to multiply the bet, to get even more money
2) You would withdraw the money, and invest it into some financial investment: maybe some cryptocurrency investment, maybe some fiat investment
3) You would spend it:
A) Buy a car or a house
B) Spend it on women or wife
C) Spend it on your kids
4) Donate it to charity
5) Start up a business
6) Hold it in Bitcoin
7) Other
I guess I would do 2+3+4+6.
But I know I won't be that lucky to win any big Jackpot. Just never happened in my whole life.