This is the OpenCore EFI files necessary for booting macOS Big Sur on the MSI B450 Tomahawk Max Motherboard, as well as support for the additional hardware listed.
[OpenCore 0.6.3 EFI for macOS Big Sur 11.0.1 ]
[CPU] [AMD Ryzen 5 3600 3.6 GHz 6-Core Processor]
[Motherboard] [MSI B450 Tomahawk Max ATX AM4]
[Memory] [G.Skill Trident Z RGB 64GB (4 x 16GB) DDR4-3200MHz CL16]
[Storage] [Inland Premium 1TB M.2-2280 NVME SSD]
[GPU] [XFX Radeon RX 5700 XT Triple Dissipation 8GB]
[LAN] [Realtek RTL8168H/8111H PCI Express Gigabit]
[WIFI] [Fenvi FV-T919 PCIe x1 802.11a/b/g/n/ac + Bluetooth 4.0]