Grades on a 100 point scale

What is a good unweighted GPA on a 100 point scale at an average public? Is unweighted or weighted more important?

Good is a relative term. 100 is pretty good, unweighted, but so is 98.

Good is indeed a subjective term. I suppose 80 and above is pretty good in my books.
As far as weighted and unweighted, colleges care more about your actual transcript rather than your GPA. It’s a mixture. They care about the classes you take and what you got in them.

Your question is really subjective. However, I think good is between 90-100.