Have a look at a free pack that will help you get started with sci-fi projects in UE4.

The set includes assets to create highly-detailed, amazing sci-fi environments. You can customize up to four individually masked areas per mesh, and tweak PBR and color values to your liking.

The pack will be perfect if you're a beginner who wants to set up the very first scene.

Included:

• Modular SciFi: Engineer Hallways
• Modular SciFi: Engineer Props
• Modular SciFi: Engineer Interiors
• Exclusive example environment demonstrating how to utilize all packs cohesively.
• Example maps from each individual pack

You can learn more and get the pack here.