Without configuring hardware for led how can the led glow

hello @parijatkundu244,
This will be a two step process:

  1. Connect LED to the Bolt Wifi Module. (Don’t forget to use a resistor in series with the LED)
  2. Control the LED over Bolt Python Library using Device ID and API Key using Python Coding.
    You can check this link also:
    Project 8: LED Intensity (Brightness) Control
    This discussion involves LED brightness control and may be of help.
    I hope this helps.
    Regards,
    Tunir