Advertised as being able to hdrp

In the assets store, i read that the pack i bought could be converted to hdrp. this was written by the creator. please let me know how to do that and what was meant by that statement.

See where it says “Upgrading Materials” here:

https://docs.unity3d.com/Packages/com.unity.render-pipelines.high-definition@14.0/manual/Upgrading-To-HDRP.html

It’s also possible that the author might have included HDRP materials that you can unpack. In that case, forget about the article above and follow the instructions that the asset creator provides.