What I did was, go on the Curt website and found the model they sell for a 2020 RX 450h, the mounting location is the same from 2016 up doing some searches on installation videos, everyone talks about trimming the bottom of the bumper I took some measurements and determined the size of spacers I would need (see my post) and it fit perfectly
I don’t have kick sensors so it wasn’t an issue, but I read somewhere that people with kick sensors had no issues and other relocated the sensor, to one side.