If its R2024b, did you follow all the instructions on this page? https://www.mathworks.com/help/uav/ug/visualize-vtol-flight-mission-over-urban-environment.html
You will need to manually import the VTOL Vehicle into Unreal Engine to use it in Unreal Engine Scenes. In particular, this instruction on modifying the path in the VTOL block is important:
To copy the reference path to this asset, right-click the VTOLAsset skeletal mesh object in Content Browser pane and click Copy Reference.
In the Simulation 3D UAV Vehicle block of the Photorealistic subsystem, set the Type parameter to Custom and then set the Path to custom mesh parameter to the reference path.
Hope that helps,
Nishan
