For example, Texas Tech University in Lubbock accepts a score of 3 and awards 3 college credits applied to freshman level history. However, if you attend the University of Iowa, you will need to earn a score of 4 to get the same 3 college credits. Also, depending on your major, AP World History may count towards you major or towards the general education requirements for your degree.
Not all institutions accept a 3 on the AP World History exam for credit, but more elite colleges take 4s at a minimum, and 5s earn credit at almost any college or university. So you can see that your school choice counts critically in your assessment. Check the AP credit database to find out the criteria for AP scores for your dream school.