I think they plan to buy a country and move there. A country that has no extradition agreement with the US.
Your post here reminds me of one particular idea Bill could be contemplating in reference to how they're going to spend that much money.
And that is that Bill is planning on buying Jeffrey Epstein's ......Orgy Island in the Caribbean.
Maybe he'd have a heart attack being serviced by twenty or more underage junior high girls every hour! Good Riddance!