It takes 10 minutes for a chest to respawn. On average you get two crowns from a chest. (1-4 Crowns per chest) I opened 100 chests and I got 55 items (Arrows, bait, equipables (excluding weapons) , weapons) 53 crowns means amount of times not the total amount of crowns.

Basically:

- ≈ 8% chance to get double items
- ≈ 14% chance of clothes and amulets
- ≈ 26% chance of arrows
- ≈ 14% chance of bait
- ≈ 1% chance to get a weapon

– - ≈ 47% chance of Items
- ≈ 53% chance of Crowns

Though everything is based of what I got in 100 chests.

When I made this post I hadn’t checked the wiki but they have more acurate results: https://roblox-world-of-magic-wiki.fandom.com/wiki/Chest#Loot

Thanks to NoBanana that linked me to this.