Currency

• Follow standard numbers rules outlined in said section.
• Currency names should not be capitalized (unless requested by some other grammar rule).
• Use currency abbreviations instead of symbols

e.g. “EUR,” “USD,” “JPY,” or “CNY”

• Currency abbreviations can either precede (with no space) or come after (with a space) the amount (e.g. “EUR10” or “10 EUR”). Both are correct and it comes down to a stylistic choice. Make sure to stick to one and to not mix the two within a script.
• Use currency names instead of abbreviations when no amount is specified (e.g. “I don’t like euros.”)
• Any currency other than the Japanese yen must present a conversion into US dollars above it.

More info:
How to write about money in business writing
How to Format 30+ Currencies from Countries All Over the World