The exchange rate between the US dollar and the Nigerian naira fluctuates constantly. To determine how much a $75 Play Store gift card is in naira, one needs to check the current exchange rate. Financial institutions and online currency exchange platforms provide up-to-date rates.

Typically, when the exchange rate is favorable, a $75 Play Store gift card could be worth a significant amount in naira. This amount can vary depending on economic conditions and market forces. For example, if the exchange rate is around 400 naira to a dollar, then a $75 gift card would be approximately 75 * 400 = 30,000 naira.
However, it's important to note that exchange rates are not static. They can change throughout the day. So, it's advisable to keep an eye on the latest rates before making any conversions. This ensures that you get the most accurate value for your $75 Play Store gift card when converting it to naira.