How to install Google Chrome on Zorin
You can download deb installer here:
Double click to install.
For future reference, Zorin 16 was based on Ubuntu 20.04, but has muddled that a little by including the 5.11 kernel, making it equivalent to Ubuntu 21.04. Your searches for answers can include these, since there are very few tutorials for Zorin on the web.
I will keep that in mind.