Yakuza 0

The earliest you can this achievement is in chapter 6 you will learn how to throw money with Kiryu.

You'll come across a man and some thug or punks whatever they are asking for some money from a man. Once you beat them up talk to the man and he will show you how to throw money. The achievement will not unlock during the tutorial you'll need to complete the tutorial first.

Not sure if you can unlock by just randomly throwing money by hitting the button with no thugs coming to attack you. I do know if they are coming attack you before they do attack you hit button to throw the money and it should unlock.

But if you end up getting attack and have to fight them then you can not unlock the achievement you have to do it before they attack you.

In chapter 6, you will do a main mission to inspect where the guy got killed to clear your name. After that mr moneybags appears, after the tutorial you can press X to scatter money.

In chapter 6, during the story, you learn to throw money by pressing X after running into a rich guy.

To actually throw money, walk up close to any group of thugs harassing a civilian. Instead of pushing A to intervene, push X to throw money. (Then keep doing it to 5 million to get the other achievement too!)