All credits goes to @MichaelCable ,
To get everything done, here are basic tutorials that helped me out using Maya 
:
- Do a basic blend shapes in Maya
- Animate blend shapes in Maya by settings key frames
- The last step is to use the join tool so UE fbx import can recognize the mesh as skeleton, and this is done by:
1- Selecting the Joint Tool (Skeleton > Joint Tool) from the Animation menu set,and press once in the middle of your mesh.
2- Open the Outliner (Window > Outliner) and select the joint (by clicking the name), then shift select the mesh (the parent).
3- Parenting step, To connect the two, choose Skin > Bind Skin > Smooth Bind from the Animation menu set.
Remember when you export the fbx to check the blend shapes tick box under deformed model under animation.