To view what has been unlocked, press pause, then select Player, then Arthur to see them listed.
Once you have a Trinket or Talisman, its effects will be on your character for good. Most of them require items of significant rarity, such as tracking down Legendary Animals through to items earned from collecting entire lines of collectables. Provide them with the relevant item and some cash, and you'll walk away with your item. These are crafted at Fences, the illegal shopkeeper found dotted through Red Dead Redemption 2's map. To earn Perks, you have to collect Trinkets and Talismans. Watch on YouTube How Perks, Trinkets and Talismans work in Red Dead Redemption 2