Bethesda says no official Mod Support for Oblivion Remastered
Bethesda won't provide official mod support for the Oblivion Remastered, despite the strong history of mod support.

Xbox and Bethesda shadow dropped The Elder Scrolls IV: Oblivion Remastered on Xbox Series X|S, PlayStation 5, and PC, an Unreal Engine 5 remaster of the beloved fantasy RPG. While the "remastered" in the title might undersell it, this style of remaster includes gameplay improvements, new content, and all the DLC packaged together, making it feel like a much bigger overhaul compared to some other remastered games.