The conversion rate of an Amazon gift card to the Nigerian Naira can vary on a daily basis. It depends on various factors such as the current exchange rate in the market. To determine exactly how much 500 Amazon gift card is worth in Naira today, one needs to check with reliable currency exchange platforms or financial institutions.

These sources usually provide the most up-to-date exchange rates. Different platforms might offer slightly different rates due to factors like their own business models and overhead costs. It's important to compare rates from multiple sources to get the best deal.

Once you have the accurate exchange rate, you simply multiply it by 500 to find out the equivalent amount in Naira. This will give you a precise figure for how much the 500 Amazon gift card is worth in Nigerian currency on that particular day.