Hi! Could you please describe what errors you had?
That would help me to solve the importing problem!
You could give me a screen shot as well then I can look into it.
It's complaining about CGPROGRAM in the errors and also it cannot find some URP files.
Maybe you don't have URP installed? That means you have to make sure you have the Universal Render Pipeline package in your project.
You might need to restart unity. Please let me know how it goes!
This is the official documentation, that explains how to install it both in a project created from scratch and converting a built-in project: https://docs.unity3d.com/6000.0/Documentation/Manual/urp/InstallingAndConfiguringURP.html
There is a selection of types of projects and sometimes people start a new one with the built in pipeline.
A really quick test you could do is to create a blank URP project and import the package.
I hope that helped. If you still have any issues just leave me a comment here that I answer as soon as I can 😀