Installing drivers for Linksys Wireless WUSB6300 Adapter on Ubuntu 20.04
I regret to learn that the recommended git repository has very recently been superceded. Here is the new method:
git clone https://github.com/morrownr/88x2bu-20210702.git
cd 88x2bu-20210702
sudo ./install-driver.sh
Reboot
NOTE: Since you refer in your previous question to another attempted driver installation, I assume that the prerequisites git, dkms, build-essential and linux-headers are already installed.