Which currency is the highest in the world?

Could you possibly enlighten me on which currency holds the top spot globally in terms of value? I'm genuinely curious about this matter, as it seems to be a topic of much discussion and speculation in the world of finance and cryptocurrencies. Is it perhaps a traditional fiat currency, or could it be a digital asset that has taken the lead? Either way, I'd appreciate it if you could provide some clarity on this intriguing question.