Lol if I had truly infinite money, this is a story of what I would do.

I would first have a "magical investment bank" that would promise 200% per annum with interest paid monthly, but only if paid in cash and at least 50 million to start. Have this scheme open for a few months with actual results and interest paid out. This is to get billionaires and megacorps to liquidate their assets into soon to be worthless monetary instruments. Then, everyone in the world but the top 0.1% would get 1 trillion. Everyone's debt is virtually erased, and the old top 0.1% can go ahead, get their money back and feel bad about themselves. With all currency effectively rebased to a billion times than previously, now we can work on solving the world's problems as shoulder-to-shoulder equals. Give the world food, give the world shelter, give the world healthcare, give the people of the world a purpose, give the people socioeconomic freedom, give them trains, give the world a chance at reversing disastrous effects of climate change.

If it didn't work, then my money would be just as worthless any way (unless my infinite money powers could manifest in bottle caps or whatever the newest thing people found value in was).