I am a CG student who is learning Houdini. I want to export the geometry to another 3d software package.
I know I can right click the node and choose “save geometry” in the sop environment to export a model.

Can I also export the geometry in the object environment? How?

Objects only have transform data. If you want to save your geometry with the object transform baked in, use another object and inside, put down an Object Merge SOP. In the Transform Object parameter, put “.” (dot) in it to mean the current object. Then in your Object 1 parameter, merge in that object. Now you can save the contents of the Object Merge out.