# wget -q https://www.virtualbox.org/download/oracle_vbox_2016.asc -O- | sudo apt-key add -
# wget -q https://www.virtualbox.org/download/oracle_vbox.asc -O- | sudo apt-key add -

VirtualBox is a powerful PC virtualization solution allowing you to run a
wide range of PC operating systems on your Linux system. This includes
Windows, Linux, FreeBSD, DOS, OpenBSD and others. VirtualBox comes with a broad
feature set and excellent performance, making it the premier virtualization
software solution on the market.
Install Howto

Install repository GPG key:

# wget -q https://www.virtualbox.org/download/oracle_vbox_2016.asc -O- | sudo apt-key add –
# wget -q https://www.virtualbox.org/download/oracle_vbox.asc -O- | sudo apt-key add –

Add the following line to /etc/apt/sources.list:

deb https://download.virtualbox.org/virtualbox/debian focal contrib

Update the package index:

# sudo apt-get update

 if you get

Access Denied

please use some VPN software like Vpngate
you can find a Guide here

Install virtualbox-6.1 deb package:

# sudo apt-get install virtualbox-6.1

. Become a “vboxuser” in Host machine (local machine)

To be able to get access to an attached USB device, the Ubuntu host user needs to be in the vboxusers group. Add your user to this group by running the following command

sudo usermod -aG vboxusers

and reboot or logout/login.