This is just saying to put the line CV 1 N 0 in script 1, the line CV 1 N 7 in script 2, and so on. The indication of what script you’re editing is really in the bottom-left corner of the screen when you’re in edit mode. You don’t write “1:” explicitly, you just switch between different scripts. Scripts 1-8 will run when a trigger is received at the corresponding numbered input jack on the module, or when the corresponding function key is pressed.
These 4 lines in this example go in 4 separate scripts. You can switch which script you’re viewing using the ] and [ keys. A scene is kind of a snapshot of all of Teletype’s main state, including all the scripts and pattern data, which you can save to the module’s internal storage and recall later, but you can only have one scene loaded at a time.
As a simple test you could try putting TR.P 1 in script 1 and pressing the F1 key – this says “pulse trigger output 1”, so when you press F1 you should see the yellow LED over trigger output 1 flash briefly. If this doesn’t work, might need some more info (like are you using a different keyboard than the one that comes with Teletype).
These kinds of questions always help us to make the documentation better!