You can find the kernel version by writing "uname -r" in the terminal.

In my case it prints "6.8.0-79-generic", which would be the answer if NewNewAugustEast had asked me about how old my kernel is. Yours is probably something else than that precise version. Except that I'm running Ubuntu and Mint is also kind of Ubuntu.

If you want, you can also paste the output of: "lsb_release -d", NNAE might be curious to know that, as well.

For your personal use, you can use uname -a and lsb_release -a, but I had the feeling some of the output of those would be things you wouldn't want to say publicly but might not understand to redact.