Tested on Fedora 32.
sudo dnf groupinstall "Development Tools"
sudo dnf install dkms
git clone https://github.com/gnab/rtl8812au.git
sudo dkms build 8812au/4.2.2
sudo dkms install 8812au/4.2.2
sudo modprobe 8812au
Now your Wifi dongle should work and you can use it to connect to your wifi network in Network Manager.