Golden bars (Red Dead Redemption 2)

Already in the 2nd chapter, you can find 10 gold bars, on the treasure map.
1) How many gold bars can be found in the entire game?
2) Le Tresor Des Morts Treasure Card. Found the first place to take the treasure, not far from the camp in the second chapter. In the hands of one of them was a treasure map, which I did not have time to take because of the departure of the game. (How do I get my first card now?
P.S. no earlier save (