What does it mean to be Pashtun Sunni Muslim Afghanistans majority group?

If the question is asking what is the specific value and valor in being a Afghan Pashtun, then that is not a question that I am capable of answering as I am not a Pashtun nor known one intimately.

However, if this is a question asking what all of the terms "Pastun", "Sunni Muslim", "Afghanistan", and "majority group" mean, these are answerable. Pashtuns are an ethnic group in Afghanistan and Pakistan who speak dialects of Pashto (a language related to Farsi and Urdu). Pashtuns are typically more unified, organized, and are more likely to live in major cities than other Afghan groups. Sunni Muslim refers to the sect of Islam that prevails in most of the world and stands in opposition to the Shiite Muslim sect. Afghanistan is a country in Central Asia. The term "majority group" means that an ethnic group represents more than 50% of the country's citizens.