Where is the MSFS 2024 community Folder?

Yes and no, because not all airports, airplanes, and add-ons that work with MSFS 2020 will be compatible with MSFS 2024. Therefore, it’s recommended to have two separate folders. However, you can create a symlink to the MSFS 2020 community folder and set it up so that the MSFS 2024 version uses it - this is not recommended.