Hi and welcome to the forum.
I see you have Z15.3 Core. That should just about run on your machine but 2GB RAM and 32GB eMMc will be a performance challenge. But I once ran Z15.3 Core on 2.5GB RAM.
I assume you intend to run only ZorinOS from the 32GB drive and have wiped Windows.
That is your Grub menu.
The normal choice is Zorin, but see you get an error message.
Until someone else comes along that can help you. Can you please have a look at this pre-installation checklist. Before you install
If you want to confirm the SHA256 checksum for Z15.3 Core, it is:
Zorin OS 15.3 Core 64-bit ISO sha256 checksum
307d0244433e6d2a64ba790f2164b791886f52643346c2c0f85daaaddc0f7891