NPD BookScan has published the top 20 selling manga in the United States for February 2021:

1. My Hero Academia Volume 1 by Kōhei Horikoshi
2. The Promised Neverland Volume 1 by Kaiu Shirai and Posuka Demizu
3. Demon Slayer: Kimetsu no Yaiba Volume 20 by Koyoharu Gotouge
4. My Hero Academia Volume 26 by Kōhei Horikoshi
5. Chainsaw Man Volume 3 by Tatsuki Fujimoto
6. Jujutsu Kaisen Volume 8 by Gege Akutami
7. Attack on Titan Volume 1 by Hajime Isayama
8. Jujutsu Kaisen Volume 1 by Gege Akutami
9. My Hero Academia Volume 2 by Kōhei Horikoshi
10. Haikyu!! Volume 1 by Haruichi Furudate
11. The Promised Neverland Volume 2 by Kaiu Shirai and Posuka Demizu
12. Jujutsu Kaisen Volume 4 by Gege Akutami
13. My Hero Academia Volume 3 by Kōhei Horikoshi
14. Given Volume 5 by Natsuki Kizu
15. Demon Slayer: Kimetsu no Yaiba Volume 1 by Koyoharu Gotouge
16. Uzumaki by Junji Ito
17. Tokyo Ghoul Volume 1 by Sui Ishida
18. Toilet-Bound Hanako-kun Volume 1 by Aidairo
19. Attack on Titan Season 1 Part 1 Manga Box Set by Hajime Isayama (#20)
20. Spy x Family Volume 1 by Tatsuya Endo

Source: The Fandom Post