Hi @Nikhil_Rao, I’ll give you the benefit of the doubt and assume that you’re not a troll…
Firstly, if you want someone to write code for you then you’ve probably come to the wrong place.
Secondly, if you want to track the position of a NodeMCU device that doesn’t have a GPS attached to it then you’re out of luck - the NodeMCU has no way of knowing where it is without a GPS module. It also has no way of communicating back to the Blynk server without a Wi-Fi connection or an add-on board that gives cellular data transmission functionality.
If on the other hand you want to use the inbuilt GPS sensor of the phone to track the location of the phone and output its coordinates as a stream of latitude and longitude values to the serial monitor of a PC - using a NodeMCU - then the code is already available in Sketch Builder: