Delos wanted to record data on the people that came to the park and replace them with Hosts like them. On the secondary note, Delos was trying to crack the code to move the human conciseness into the body of a Host in order to gain immortality. Which I assume Delos could then sell to the rich looking to live forever, all that data seemed to be in the dad's brain.

Dolores has the info now and is headed towards the Valley Beyond with it (past) and Hale has discovered that Bernard is a host and is headed towards the Valley Beyond (present) for what I assume is to get said data.

Man in Black got filled full of rounds in a shootout with Maeve, who used her powers to convince his posse to kill him with the exception of Lawerence who's somewhat self-aware, though she convinces him to remember all the bad shit MIB/William did in the past to him. He get's bodied by Delos security who rescued the narrator guy.