The value of a Google Play Card worth 30 units in Nigerian Naira can vary depending on several factors. Firstly, exchange rates play a crucial role. Exchange rates are constantly fluctuating in the global market. This means that the amount of Naira equivalent to a $30 Google Play Card can change from one day to another.

Typically, to determine the exact amount, one needs to check the current exchange rate between the US dollar (assuming the Google Play Card is denominated in dollars) and the Nigerian Naira. Financial institutions, online currency exchange platforms, or even some major banks usually provide up-to-date exchange rate information. By multiplying the value of the Google Play Card in dollars (in this case, 30) by the prevailing exchange rate, one can calculate the approximate value in Naira.

It's important to note that different platforms may offer slightly different rates for currency conversions. Additionally, any fees associated with the conversion process can also impact the final amount of Naira received for the Google Play Card. So, it's advisable to compare rates and ensure you are getting the best possible deal when converting the value of the Google Play Card into Nigerian Naira.