For those of you who have been following this thead (Ubuntu 20.04 LTS Focal Fossa) it will no longer work for the most recent 5.15.0-27-generic kernel shipped with the latest LTS.

However, the following steps worked with Ubuntu 22.04 LTS Jammy Jellyfish:

sudo apt update; sudo apt install git linux-headers-generic dkms
wget https://github.com/RinCat/RTL88x2BU-Linux-Driver/archive/master.zip
unzip master.zip
cd RTL88x2BU-Linux-Driver-master
sudo make uninstall
make clean
make
sudo make install
sudo modprobe 88x2bu
sudo reboot

Disclaimer: I’m not the developer/maintainer for this driver. Issues, bugs, or future suggestions shall be posted directly to the author/contributors.

Edit: Also, this is an unofficial (community) release. It is not endorsed by the TP-Link team. Use at your own risk!