I look at the youtube tutorial Blender UE4 Cloth - YouTube
but I couldn’t get the download file of physx 3.30 / apex 1.3.0 tools.
I only saw physx for maya and 3dmax.
Can anyone give me the link for the download for blender please?

Hey, here is the link to download the SDK, you need to first register for the NVIDIA Registered Developer Program (RDP). Then you can download the tools after confirmation.

You will want to download the PhysX: APEX SDK and there are a few versions, so try them all if you wish…

Also more information on the SDK found here.

Also just so you know, this isn’t for blender, its a standalone binary that allows you to add physics to your meshes. You can then load the apx file into the unreal engine.