Unable to transmit video from jetson nano to my laptop

Please try steps in FAQ and check if you see camera preview by connecting Jetson Nano to a TV:
Jetson Nano FAQ
Q: I have a USB camera. How can I launch it on Jetson Nano?

If the steps work, you may try to set input stream to V4L2 camera and output stream to RTSP stream. And then you should be able to open VLC player on Windows and receive the RTSP stream. You may also refer to steps in FAQ:
Q: Is there any example of running RTSP streaming?