Servo motor control

how to create an app to control two servo motors with esp8266 node mcu

A community search is a good place to start

As @TIMAI2 wrote it, search, but to give some more info:

  1. I think connecting via bluetooth is easier than via ethernet.
  2. ESP8266 does not have bluetooth, so you either have to connect a BT module to the ESP (e.g: HC-05, HC-06) or use ESP32 instead, it has BT.
  3. If you wish to stick to the ESP8266 search for @Juan_Antonio 's ESP8266 tutorials.