Here are the LEGO Fortnite System Requirements (Minimum)
CPU: Core i3-3225 3.3 GHz
RAM: 8 GB
VIDEO CARD: Info
OS: Windows 10 64-bit
LEGO Fortnite Recommended Requirements
CPU: Core i5-7300U 3.5 GHz
RAM: 8 GB
VIDEO CARD: Nvidia GeForce GTX 960, AMD Radeon R9 280, or equivalent DX11 GPU
DEDICATED VIDEO RAM: 2048 MB
PIXEL SHADER: 5.0
VERTEX SHADER: 5.0
OS: Windows 10 64-bit