What am i supposed to get out of writing the script, while the tutor speaks?

1) I suggest that you should pause the videos every so often to catch up and examine the actual code. I've done hundreds of these videos and I still make sure to pause so I can either catch up on new concepts or make connections to concepts I've already learned.

2) Writing down the code that the tutor is important, especially early on, since you'll make a lot of syntax errors, and being able to compare your code to the videos helps you to find those niggling, and oftentimes exhausting, typos.

3) A lot of learning requires rote memorization. Doing this stuff over and over creates growth.

4) Ideally, you'll reference the code again in the future to see what you did before and why it worked so that you can either repeat it until you get it right, or later, modify it to see what's happening when you make those changes.

We all learn in different ways. I write down all the code and notes i think are important and go back to them if I need to.

Unfortunately for me that's a lot of looking up and referring to code because my short term memory isn't good. :)

Well I think everybody learns in a bit different way. I never took any notes nor did the same thing as the instructor does.What I did and still do is open my codepen and start working on a project related to it. For me, things you see in a video will just wash away after sometime, you won't remember it unless you make something on your own. If I am stuck, I go back to the videos and find a solution.

for eg. in Ajax Basics course, Dave taught how to use an api with an example of flicker. I created my own app using weather api and wikipedia api. That's how I learn.

You have to find out your own way how you think you can learn better. I never replicate the code so that I can focus 100% on what is being taught in the course and understand the logic behind it because only logic will help you nothing else.

"So i feel like im just writing a bunch of code that the tutor came up with, and i don't really learn any of what he is saying since im typing. is this how it is supposed to be ?"

Obviously this is not working because you said so. So, change it and keep on changing the methodology you use to learn until you find the best fit for you. Good luck