Hello @Marudhupandian ,
TouchGFX allows for a simple and quick control of a screen thanks to its framework but it is not plug and play for all boards.
For a few STM32F4 we have made a TBS (TouchGFX Board Setup) that allows those board to be plug and play but this is not available for the STM32F423HT6.
This means that you have to create your TBS yourself, basically giving TouchGFX the information about your board speed, communication protocol, screen technology, etc.
You can find how to make a TBS in our documentation : board-introduction
Furthermore, you can check the other F4 series TBS by opening TouchGFX Designer, clicking on "Create new" and typing "f4" to see al the available TBS for F4 series boards:

You can also check some videos, here is a complete but long one : How to integrate TouchGFX in a custom board
I hope this helps. :smiling_face_with_smiling_eyes:
If this message answer your question, I invite you to select it as "best answer".
Regards,