The Apostles Creed is not scripture. However I believe it accurately articulates some important aspects of the Christian faith.
I think theology is important. There are some great theologians, and some that are perhaps less than great. However theology is important, it can inform our expectations of God and life.
Neither creeds nor theology are actually what is crucial to the Christian faith. Jesus Himself made this clear. Love God. Love others.
Love of God, knowing Jesus, having a relationship with Him with all that entails is crucial to our Christian faith. Hearing from Him, listening to Him, worshipping Him. This is essential.
Love of others. Caring about our neighbour, seeing justice on earth, caring for the poor, sharing our faith, helping people say yes to Jesus. This is essential.