If you going to build a new computer, or buy one ready built. Do not go for what can run something at minimum spec today. Because at that point it's already obsolete. If you on a budget, go for an AMD Ryzen platform. Even though a 1060 isn't the latest any longer in the way of gfx cards, it will still hold some miles yet and reasonable affordable. 16gb ram should go a long way too.
There is tons of build videos on youtube though.
Idk the minimum requirement for just this game, as there is a lot more variables to it than just the game engine.
If you look at something more "out there" that use Unreal, such as Fortnite, the requirement is;
- Operating System: Windows 7/8/10 64-bit.
- Processor Core: i5 2.8 Ghz.
- Memory: 8 GB RAM.
- Video Card: Nvidia GTX 660 or AMD Radeon HD 7870 equivalent DX11 GPU.
- Video Memory: 2 GB VRAM.
But that is not something I would even considered use in a new build today that would last me some years into the future.