The exchange rate between the US dollar and the Nigerian naira is constantly fluctuating. To determine how much a $15 Play Store gift card is worth in naira today, one needs to check the current exchange rate.

Exchange rates are influenced by various factors such as economic conditions, market trends, and central bank policies. These fluctuations can cause the value of the conversion to vary significantly from day to day.
To find the exact amount, it is advisable to refer to reliable financial sources or currency exchange platforms. They will provide the most accurate and up-to-date conversion rate, allowing you to calculate precisely how much the $15 gift card would be in naira at the present moment.