@mallareddy-mettu There is no CP2102 USB-to-Serial chip on the Arduino Dock 2.

Can you see your Omega-ABCD among the WiFi APs on your PC?
Connect to the Omega’s WiFi Network - the default password is: 12345678
Success?
Official Onion Omega2 Documentation SSH on a Windows Device
PuTTY 'Host Name (or IP address)'
root@omega-ABCD.local or root@192.168.3.1 - the default password is: onioneer

Do you have a CP2102 USB-to-Serial module / cable and want to communicate with your Omega2 via serial line?
Connect it to your PC, run PuTTY, select Serial connection and fill in the appropriate serial port info.
First of all try to do a simple loopback test: connect TX to RX and type something. Can you see the typed characters on the screen?
Fail?
If your PuTTY Configuration is correct then this is definitely not an Omega2 problem. It can be some CP2102 Windows driver issue, maybe you have a fake CP2102 chip, etc. (Google is your friend ;-)

Good luck!