I am unable to add url in banner, even after adding url in the banner.
In the front end no option is coming to click on the banner. please help it's urgent
Not sure what is the Banner Slider you're using. Is it 3rd party extension or your custom code as part of CMS static block? If it's 3rd party extension, you should contact to the extension vendor and notify them about the issue. Otherwise, if it's Magento's functionality, just post more information how did you set up that banner, and let's try to find a solution.