You cannot buy anything with this banknote. But you can make good money on selling it.
The Euro is a reliable convertible currency used by most European countries. She has bills of 5, 10, 20, 50, 100, 200. There was also a 500 euro bill, but they stopped printing it.
In addition to the main denominations, the mints have also issued zero-euro banknotes since 2015. No, you cannot pay salaries with it, this is an ordinary tourist souvenir while having all the signs of real currency. The banks of the countries have agreed that the zero euro will not be a means of payment, but at the same time will retain the features of the currency design and will receive recognition and protectorate. In other words, they created conditions ideal for the existence of the object of worship of numismatists.