Commands are as follows:
sudo apt update && sudo apt upgrade -y;
sudo apt install software-properties-common apt-transport-https -y;
sudo add-apt-repository ppa:kelebek333/hplip -y;
sudo apt-get update;
sudo apt-get install hplip hplip-gui -y;
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Next you need to install respective plugins
Check the version of hplip using command: dpkg -l hplip
Then, download corresponding plugin file & .asc file that matches with version from link https://www.openprinting.org/download/printdriver/auxfiles/HP/plugins/
Then in terminal, type: hp-plugin
Then follow the GUI screen to install plugin.