Is it possible without zipping the whole project to send camera rig and the attached camera to another level/project?
you can move any asset to another project with the merge option. Right click on asset in content browser, goto asset actions and click merge, then choose the content folder of the project you want it to be in. As for using in another level of the same project I am not sure what you mean. If it’s your game view camera it will work in all levels of the project.