As far as I know there are only 4 ways to increase reown which is:
- Get Quest option from NPCs (Only Billy and Suong)
- Helping random NPCs (2 each weeks)
- Doing quest from quest board at RiverStone
- Streak 7 days work without fail
Which seem like a lot but my problem is every one of them reward only 1 reown per quest/help, which seem fine in the 50 weeks playthrough, but add to another repetitive tasks such as farming, foraging, dungeon diving it getting tedious really quick.
Hope it get improve in the later update.