First, please make sure that you have a SOLIDWORKS Simulation Professional or Simulation Premium license available on your system. Next, check your model - if it contains only surface body geometry, you will not be able to create a drop test study. Please see:
If this is urgent, please contact your SOLIDWORKS Value Added Reseller (VAR) for assistance.
Please check your license.
Also check in add ins for SolidWorks Simulation professional