Hey can I clone my current Hackintosh system drive to a bootable USB in order to experiment with upgrades?

I currently have a dual boot Catalina/Win PC that someone else set up for me. It's a few years old now and I'm ready to upgrade the OS. The thing is I absolutely can not afford to be down for more than a day (I use my machine for work). Which is also why I don't want to bring my box back to the Hackintosh dude who built it.

Is it possible to clone my system drive 1 to 1 onto a bootable USB stick/drive so that I can experiment with upgrading my Catalina to a newer OS? or attempt a fresh install -- without it fucking anything up on my current system?

And if so, what should lI use to clone it? and are there any caveats I should be aware of? I'm especially worried about messing up my current setup.

I'm sure this question is super basic, so apologies if it's been asked a lot.

Thanks in advance