This is similar to your question about the musical alphabet.  There are many different ways & places to play the pentatonic scale.  There are a total of 12 pentatonic minor scales, one for each possible letter of the musical alphabet (A, A#, B, C, etc.).  There are a total of 5 basic patterns each scale makes on the guitar.

But that is all well beyond the scope of beginner material.  In the Fundamentals course Anders is simply introducing you to the pentatonic minor scale.  So he shows you the one most commonly used pattern that will help you get started playing the scale in a very useful practical way.

And that's all you need to work on as a beginner.

For future reference, the scale can be played across the guitar as low & high in pitch as the instrument extends.  Exactly like the musical alphabet.  The good news is that is more advanced material for later lessons.  For now, as a beginner, it's enough to know that one pentatonic box shape & work on making music with it.

Regarding the 5 different pentatonic positions (they are also called boxes or patterns), since the pentatonic minor scale contains 5 notes, there are 5 possible boxes it can form on the guitar when you start playing the scale on each one of those 5 notes on the low E string.  I cover this in my tutorial on Pentatonic Scales.  

https://www.guitartricks.com/tutorial/296

Regarding that numbered list (1. Position 1, 2. Position 2, etc.), it is referring to diatonic major scales (that contain 7 notes) & not pentatonic (which contain 5 notes).  That is all well beyond the scope of beginner material.  

Don't worry about any of this.  You'll get to it later.  Keep working on the Fundamentals course & keep practicing that material.

Hope that helps!