How can I build a relationship with my dad?

Your father needs Jesus, he was given a choice to either walk in love with people or to be cruel and follow the devil, which one do you think he chose? You should read the bible and you need to pray that God will help show you how to build a relationship between you guys. Jesus knows you and your dad more than anyone else and he knows the right way to help you guys. Ask God who he is and pray for your Father. no matter what Love him. Jesus Loves You