That APU is not supported by your motherboard since it isn't listed. Asus will need to indicate or add a BIOS version that will support the Athlon 3000G.
I went to PCPARTPICKER and under Motherboard Compatibility for the Athlon your motherboard is not listed either. The only Asus X570 Motherboards that are compatible are these: https://pcpartpicker.com/products/motherboard/?compatible_with=664BD3#m=8&V=8000,6000&s=33&c=138
I used a filter with Asus, WiFi, and X570 Motherboards and the above is what shows.
So if you install that APU on your motherboard either it won't boot up or it won't work correctly if it does boot up. The motherboard needs the correct BIOS installed for the motherboard to recognize and boot up with your APU.