Hey Yaseen!
You are right to point out the need to apply the scale. There are very rare circumstances when you wouldn’t apply the scale when modeling.
Jonathan mentioned in lesson 2 at around 2:30, when making the very first bevel on the corners to apply the scale for the console
Also in this lesson when adding the speakers, Jonathan adds a plane and then enters edit mode before scaling.
When scaling in edit mode the scale remains 1,1,1. as a result of scaling in edit mode there is no need to apply the scale.
The hotkey for setting the scale to 1,1,1 in object mode is CTRL+A and select scale.
Hope this helps.
Tip: If anyone is having a hard time with this course, the blender-3-basics-intro-to-blender course is the perfect course to start your Blender journey or circle back to occasionally for a reminder.
