To determine how much a 500 USD Amazon card is worth in Naira today, several factors come into play. Exchange rates are constantly fluctuating due to various economic and market forces.

Typically, you would need to check with a reliable foreign exchange platform or financial institution. They can provide the most accurate and up-to-date conversion rate. Different platforms may offer slightly different rates based on their own calculations and market access.

Once you have the current exchange rate, you simply multiply the amount in USD (500) by the rate. This will give you the approximate value in Naira. For example, if the exchange rate is [X] Naira per USD, then 500 USD multiplied by [X] will yield the equivalent amount in Naira. However, it's important to note that the actual amount could vary depending on when the conversion is made and the specific exchange rate prevailing at that time.