Scale under the Units Section

I am trying to figure out why when I add a rectangle it looks tiny on my screen.
I am just starting and wanted to know if I should adjust the scale under the Units menu.
I am using the tutorials and teaching myself how to use the program. One of the tutorials says to make a rectangle and then put in 4’,4’ to get the exact size but it is tiny.
Thank you,

You probably just need to zoom in. Modeling in SketchUp is normally done using real world dimensions of.

Thanks Dave!