What is the total amount of money transferred globally each day?

No one knows.

This would require one to look at the daily published figures of each and every payment system in the world (there are over 1,900+ of them) and a vast majority of them do not publish their numbers.

The answer is easy in the Trillions of Dollars.

Just the FX market each day do trades of $7 Trillion (would a trade count as money transferred as a contract has just been executed between two parties). There is VISA/MasterCard where millions if not billions of trades a day, all those are money transferred. The B2B market is about $300-$400 Billion a day!

In short. Its a lot.