I have different user groups in my application and application is supposed to ha

@himanshug You can do this by targetting the channel to the desired user(s)/ group(s)

In this case main dashboard screnn will be a quiet messy as you will be having number of channels for each user groups.Is there any way to create different dashboard screens and depending upon the logged in user the screen is binded to dashboard?

I assume you're using the Application Portal. You can create a Page for each Group with their respective reports that make up the dashboard. Use "Page Sharing" to restrict view permissions for the Page to the respective Groups. Once the Pages have been created, you need to add them to your Application and define Navigation elements for them.