For this reason, every script needs a structural outline as its gearbox. There are usually four or five major sections to the outline including the introduction and the conclusion. For your basic 7-10 minute video, three is usually the minimum and seven the maximum. The structural outline is further developed into a content outline by filling in the information. The outlining software I use is also described.
Content is what goes into the script.
A video project with an unclear goal will turn the script into a kitchen sink full of extraneous information. When in doubt, throw it out. The absolute best you can hope for is that viewers will remember three key points. Irrelevant content will make it more difficult to remember even those three. Less is More.