The value of a 100-dollar Google Play card in Nigerian Naira can vary depending on the current exchange rate. Exchange rates are constantly fluctuating due to various economic factors such as inflation, interest rates, and market demand.

To determine how much a 100-dollar Google Play card is in Naira, one would need to check the latest exchange rate. This can usually be found on financial news websites, banks' websites, or through currency exchange platforms.
For example, if the exchange rate is 1 dollar = 410 Naira, then a 100-dollar Google Play card would be worth 41,000 Naira. However, it's important to note that the actual amount could be different at any given time. It's advisable to stay updated on the exchange rate trends to get an accurate estimate when converting the value of the Google Play card from dollars to Naira.