Here are the Top 20 selling manga in the United States for November 2020 according to NPD BookScan:

1. My Hero Academia Volume 1 by Kōhei Horikoshi
2. My Hero Academia Volume 2 by Kōhei Horikoshi
3. My Hero Academia Volume 25 by Kōhei Horikoshi
4. Haikyu!! Volume 1 by Haruichi Furudate
5. Demon Slayer: Kimetsu no Yaiba Volume 18 by Koyoharu Gotouge
6. Demon Slayer: Kimetsu no Yaiba Volume 1 by Koyoharu Gotouge
7. My Hero Academia Volume 3 by Kōhei Horikoshi
8. My Hero Academia Volume 24 by Kōhei Horikoshi
9. Toilet-Bound Hanako-kun Volume 1 by Aidairo
10. My Hero Academia Volume 4 by Kōhei Horikoshi
11. Tokyo Ghoul Volume 1 by Sui Ishida
12. Uzumaki (Hardcover) by Junji Ito
13. My Hero Academia Volume 5 by Kōhei Horikoshi
14. Haikyu!! Volume 2 by Haruichi Furudate
15. Demon Slayer: Kimetsu no Yaiba Volume 2 by Koyoharu Gotouge
16. Berserk Deluxe Volume 6 by Kentaro Miura
17. Death Note Black Edition Volume 1 by Tsugumi Ohba
18. Chainsaw Man Volume 1 by Tatsuki Fujimoto
19. The Promised Neverland Volume 17 by Kaiu Shirai
20. Jujutsu Kaisen Volume 2 by Gege Akutami

Source: The Fandom Post