Disclaimer: install at your own risk. THERE IS NO WARRANTY WHATSOEVER.
You'll need to install a Nerd Font from Nerd Fonts and set your terminal to view the Nerd Font. Here is a video on how to do that with the Kitty terminal:
https://www.youtube.com/embed/4KdAqsU7E-M
To install Bullshark VIM clone this repository into your .vim folder, make sure to remove the .vim folder prior and backup. You can then paste this command into your terminal:
git clone https://github.com/Tunkert/Bull-Shark-VIM ~/.vim