I or someone will if you can define what you want to know just a little better. Scripts can create a complete site or they can be just a part of it.
What scripts? Any specific script you are talking about? Generally we upload the scripts to the server and then try to execute them... Bye
I know your problem, but dont know how to explain easily, its a big area to cover. Search "how to install script" or something at google to learn the basic, you need to understand the system, how things works.
This is an extremely simplified explanation. What people commonly refer to a a script is actually a group of scripts working together. Each being called to do its job by another script or user interaction with the web page. This script collection can form the entire web site or be just a part of it. A shopping cart install is usually done in a sub-directory of an existing site. How you want to use the scripts determines where you install them. Some shopping cart scripts can be installed from the control panel of your hosting account. For a newbie this may be the easiest way to go. The sever does all the work. Manually installing a set of scripts consists of downloading the files, unzipping them, reading the install instructions, uploading the files, creating a database, creating a database user, and adding that user to the datbase. Then one chmods files as required and runs the install program to set the configuration files and install the database tables. The two paragraphs just above are good for days of reading if you don't already know what each term means. And then the real fun begins. Customizing the template to look the way you want it to look.