LAS (into V1 binary .bin format inside Unity Editor)
Copy your LAS file into Unity project, for example POINTCLOUDS/ folder
Open converter window from Unity menu: Window/PointCloudTools/PointCloud to binary (DX11)
Drag your LAS file into the PointCloud source file field
Select input file format from the dropdown: LAS
Adjust converter settings, usually need [x] Flip Y & Z enabled and [x] Auto-offset near 0,0,0. Scaling might be needed (to convert your point cloud into Unity meters scale)
Press Convert to Binary
Set output folder and file, usually Assets/StreamingAssets/ (if the folder doesnt exists, create it, it gets copied to your project Build data)
Then to view it, open example scene "PointCloud-BinaryLoaderV1.scene", set filename (to the one you just created, for example test.bin), hit play!