Hello id like to share with you guys how I (finally) got my Linksys WUSB6300 802.11a/b/g/n/ac Wireless Adapter [Realtek RTL8812AU] to work on my Kali Linux 2020.1 64bit! LIVE CD Persistence.

What I did was update Kali to the latest version with apt-get update && apt-get upgrade && apt-get dist-upgrade don't forget to use sudo if you're not root.
Then afterward install dkms with apt-get install dkms and git white apt-get install git, if its not already installed on Kali. copy and type these into terminal.

1 git clone https://github.com/abperiasamy/rtl8812AU_8821AU_linux -fetching a git repository
cd rtl8812AU_8821AU_linux -navigate to folder
make compile the folder
sudo make install install the compiled folder

2 cd ~/rtl8812AU_8821AU_linux navigate to folder
sudo make uninstall uninstall the compiled
make clean cleaning
sudo cp -R ~/rtl8812AU_8821AU_linux /usr/src/rtl8812AU_8821AU_linux-1.0 move the folder from to /usr/src/
sudo dkms install -m rtl8812AU_8821AU_linux -v 1.0 dkms install

Then run sudo dkms install -m rtl8812AU_8821AU_linux -v 1.0 again and it should say that the drivers is already installed.

3 sudo apt-get install build-essential git install build-essential git
git clone https://github.com/gnab/rtl8812au.git fetch a repository
cd rtl8812au navigate to folder
make compile
sudo make install install compiled folder
sudo modprobe 8812au add module

sudo restart

credits [email protected] and pilot6@askubuntu.