The item ID for Weapon Engineering (Science) is 002C890C
These are the spawn commands to give yourself Weapon Engineering (Science) in Starfield.
Example spawn commands
Copy the command below and paste it into your Starfield game or server admin console to obtain.
Add item command: This command will spawn Weapon Engineering (Science) in your inventory.
Place at me command: This command will spawn Weapon Engineering (Science) in front of you.