The exchange rate between the US dollar and the Nigerian naira is constantly fluctuating. To determine how much 500 dollars in Amazon gift card is worth in naira today, one needs to check with reliable financial sources or currency exchange platforms.

Exchange rates are influenced by various factors such as economic conditions, interest rates, and geopolitical events. These fluctuations can cause the value of the conversion to vary from one moment to another.

So, to get the most accurate figure for how much 500 dollars in Amazon gift card would be equivalent to in naira today, it's advisable to look at the latest exchange rate data available at that particular time. This ensures that you have the correct value for any transactions or conversions involving these two currencies.