Isaac SIM- Scaling Environment

I am trying to build an environment for Isaac Sim. I created an environment out of google maps in Blender software and imported the USD file to Isaac Sim. When I try to scale the entire scene its disturbing the environment. also how to find the dimensions of each object in Isaac

You can create a bbox_cache and then compute the AABB for a prim to get its dimensions:

It is unclear what the issue is, can you share a USD file that reproduces the issue?