If your chicken is raw you will need to bake, boil or saute until it is tender enough to shred with 2 forks.
Preheat the oven to 380 F. Put the pulled chicken in a saucepan with hot sauce and mix together. Heat on low heat for 5-6 minutes, stirring occasionally. Add ranch sauce and cream cheese to the saucepan.
Mix thoroughly and heat for another 2 minutes. Add half of the grated cheddar and stir, heat 2 more minutes, stirring. Transfer the buffalo chicken dip to a 9x13 baking dish
Top with remaining shredded cheddar. Place the baking dish in the oven and bake for 20 minutes or until the cheese is light brown and bubbly