Does anyone know where I can find the script for "The sisterhood of the traveling pants"?

Answer 1

Here's an unofficial transcript:
http://www.script-o-rama.com/movie_scripts/s/sisterhood-traveling-pants-script-transcript.html

Answer 2

So far as I have been able to learn, The shooting script for the film is the only one, and they don't usually give those out, except as prizes (usually autographed) for promotions or fundraisers. Otherwise, the closest you're likely to come is the novel by Ann Brashares available at any bookstore worthy of the name.