select Build=>publish appname=> select any folder to publish then create one website in iis , map the physical address of published folder and give the full access to published folder that's it

https://docs.microsoft.com/en-us/dotnet/framework/wcf/feature-details/how-to-host-a-wcf-service-in-iis

https://docs.microsoft.com/en-us/dotnet/framework/wcf/feature-details/how-to-host-a-wcf-service-in-iis