The Outer Worlds includes Companion Quests that are optional to complete, and are played through to strengthen the relationship with non-player characters (NPCs) in the party.
Each companion has their own quests, some more than one that not only rewards players with good loot, money and XP but could also potentially unlock more quests.
Illustrated Manual Quest Guide
In this Companion Quest will have to search for the Collector’s Domicile which, according to Max, was in the possession of the collector who lives in the north of Edgewater, towards Abandoned Outpost’s location. Max will also have marked the Collector’s location on your map.
You will find out that the collector had hidden the book in a cave, to which you will have to travel in order to retrieve the Journal. Once you’ve found M. Bakonu’s Journal in the river cave, return it to the Vicar.
You will get an increased Reputation level, and Spacer’s Choice faction, with over six thousand (6,400) XP. The completion of this Companion Quest will also unlock Vicar Max.