Arrows is a type of Ammunition in Red Dead Redemption 2 (RDR2).
Wheeler. Rawson & Co. handmade arrows of the finest quality wood, flint and fletching. Serious speed, accuracy and true flight at long range. Each batch holds 5 arrows.
As for most other Ammunition, Arrows can be bought at Gunsmiths. It can also be picked up from dead enemies that were wielding bows, and chests around the world. Alternatively they can be forged as well.