So is this your progress from 23 May? Again and again new topic with similar content.
Of course, that you can establish a communication between your laptop and your Dev kit Nucleo-F429ZI, but you need to know your requirements and do something for that.
Here are BufferedSerial - API and UnbufferedSerial - API or USBSerial - API only if you want use onboard USB-OTG.
Try these examples. Then try to make your simple program where you will send a char via a Serial terminal (Termite, Teraterm and so on) from laptop and processed it in your Mbed code. You can control a Led, for example, It is good for start.