With reference to 13mins 56 secs into the lesson video - I can't seem to replicate the light reflection on the screen. - Refer to my video below-
https://youtu.be/_9QhAseo7cQ?si=N4-kkCLBL_bwyK68
Thanks
Looks like the material on your screen doesn't have a reflective component, it's perfectly diffuse it seems. In the video it looks like your BSDF (Green Node) is not plugged into the material surface output. You need that node plugged to get all those goodies it offers.