how can i make a GUI software that reads serial data from arduino and display it after some sort of operations???
Please improve the title of your post. Almost everyone is seeking for help.
Try C#, Python-Qt or processing...
This Python GUI demo may give you some ideas.
Another option is to use a Browser for the GUI. Personally I find it easier to create the screen layout with HTML and CSS. Have a look at this EzScrn demo
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If you're using Windows there is a great program called EventGhost that makes this kind of thing really easy. It has a graphical programming interface or you can also use python. It has a plugin for serial communication as well as many others.
Chrome can read serial
Arduino + chrome example