Template
Download this Unity project
Download and install Blender, even if you are not using it, this project needs it
Download and install Unity
Download the project as Zip from the code button
Unzip it a location that makes sense like your external hard drive or the local document folder
Open it from the Unity hub
Select the editor you have installed
Ignore the various editor mismatch warnings, confirm
The first time it will take several minutes to open
Open the scene Museum or Desert
Full walkthrough here:
Unity Intro and setup
Since this assignments could involve just arranging object in space you can do most of the work in Unity.