Steve Rogers is the fifth person shown onscreen being capable of wielding Mjolnir, after Thor, Odin, The Vision and Hela. Alas, Steve’s time with the hammer was short, because as you’ll remember, Mjolnir was destroyed by Hela in Thor: Ragnarok, and the only reason Thor was able to use it again was because he snatched it when he and Rocket Raccoon time traveled to the events of Thor: The Dark World. Once Thanos and his minions were turned to dust by Iron Man and the universe was safe, Cap returned Mjolnir and the Infinity Stones to their proper time periods.
Article source: https://www.cinemablend.com/news/2471940/kevin-feige-has-settled-a-captain-america-avengers-endgame-debate