Again, without straight up giving you the answer and trying to nudge you along the right path:
What is happening is you are assigning the entire list to 'script' and 'user_name' when what you want is only one element from that list (per variable). While I disagree with Lysy with the list unpacking suggestion in this situation (simply because not every element in the list is required), that is my own personal bias and it is a valid solution. I would suggest reading up on list unpacking (good to know at any rate) and lists in general.
More specifically, to retrieve an element from a list you must 'index' into it. Don't worry, it's very easy to do.