First of all, the following currencies are just the โfamousโ ones. There are tons of us who are represented neither on this list nor on the Unicode emoji list. Nonetheless, it is helpful to get your head around the existing currency emojis so that the world knows youโre referring to money, even if itโs not your own economy, and weโre here to assist you with that.

๐ฒ Heavy Dollar Sign Emoji
The first and most popular currency symbol, the dollar sign. Heck, we even have a key on our keyboards for this one. Capitalism is so strong that a generic reference to money is usually fulfilled just by one ๐ฒ.

๐ต Dollar Banknote Emoji
Voila! The previous sign on a banknote! The American Dollar may not be the richest, but it sure is counted among them.
๐ต is also commonly used while referring to wealth, earning, and economy, because ๐ฒ is a lot more popular than the others ๐

๐ด Yen Banknote Emoji
Yen is the Japanese currency and ยฅ is the symbol of that currency. Now, here we have a lot of Japanese moolah, in fact, a bundle of ยฅ banknotes. But is it spendable? Gotta check your wallet for that.

๐ถ Euro Banknote Emoji
Although ๐ถ refers to the European currency, this mode of money is only used in 19 European countries out of 27 of them in total. But, this is the only currency emoji available for Europe and hence, it shall be generalized!

๐น Chart With Increasing Yen Emoji
An increasing economy is always a good sign, and here, the value of the Yen (๐ด) is increasing! This is the only emoji with an increasing currency chart.
There is the ๐ Increasing Chart emoji but itโs evidently different from ๐น. One advantage of the latter is that this emoji is immediately understood in an economic light without verbatim.
Bonus:

๐ฑ Currency Exchange Emoji
Because without this little dude youโll never be a Roman in Rome. ๐ฑ composes of the dollar sign (๐ฒ) and the sign of yen (ยฅ), and is a mark of conversion and comparison too, maybe.
๐ฑ consists of two different economic symbols coming together and it can be substituted for other currencies or even values and prices outside the realm of economy, where youโre not just weighing money.
Money is a means to the end, and not the end itself is a widely preached ideology. Sometimes we lose ourselves in the process to the end, and sometimes itโs the only thing that keeps us alive and breathing. No matter what the reason is, you could always use these emojis on any virtual platform while referring money in any shape, size, and form.