Jazak Allah Khairun!
Answer
Al-Qadhaa literally means that which is decreed and Al-Qadr means that which is measured. According to the Shariah it refers to the absolute and perfect knowledge of Allah having knowledge of everything ahead of time. It does not that we as human beings have no choice of performing good deeds and abstaining from wrong and sinful deeds.
And Allah Ta’ala knows best
Mufti E.Desai