Great thanks @AudioGod and @Sharkus for their work.
Via your manuals I successfully installed Catalina 10.15.2 on Z390 Elite. Works SideCar and I am not see any errors, except one - iMassage and others do not work.
I unsuccessfully tried three times steps from PART 6 – ENABLE IMESSAGES & FACETIME in "Glasgood's macOS Catalina [INSTALL GUIDE] Aorus Z390 Pro & Z390 Master".
I guess the reason is the hardware, but not sure.
My first Hackintosh hardware:
Case - Zalman N2
CPU cooler - GameMax Gamma 500 RGB
CPU - Intel I7 9700 (without letters)
MB - GigaByte Z390 AORUS Elite/StarWars
PSU - 700W Be Quiet, "PURE POWER 11", 4*PCI-E, 120mm, Gold80+
RAM - DDR4 64GB (16GB*4) Corsair VENGEANCE AirFlow LPX 2666 [CMK128GX4M8A2666C16]
SSD - Samsung 970 EVO 500GB
Video - ASUS RX580 8GB
WiFi & Bluetooth - BCM943602CS in PCI-E (installed like wrote in @AudioGod's manual)
EFI 03/01/2020 19,1 Aorus Z390 Pro RX Polaris EFI
BIOS F10a, settings from @Sharkus's profile with one change - VT-d Enabled (I need Docker).
Can somebody helps me? What can I make better?