The conversion of a $250 Xbox gift card to Nigerian Naira depends 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 it is worth in Naira today, one would need to check a reliable financial source or a currency exchange platform. These sources provide the most up-to-date exchange rate information.

For example, if the exchange rate is $1 = ₦X, then a $250 gift card would be worth 250 * ₦X in Nigerian Naira. However, without knowing the specific exchange rate at the moment, it's impossible to give an exact figure. It's crucial to stay informed about the latest rates to accurately assess the value of the gift card in local currency.