The release date of Dreadnought is 02.07.2019 in Season 2 and it became inactive on 01.10.2019. It's important to note that this skin has Rare rarity and it's used for Pathfinder. It should be noted that there's an option to get this item via the in-game store for 950 apex coins, which equates to roughly 9.5$ in dollar terms. The skin is contained inside the Battle Charge at level 1.
How to get Dreadnought
Requires to reach level 1 in the Battle Charge Battle Pass.