While a broad concept, in the context of your question, science is a metod to derive knowledge from observations.

Alternatives to the scientific method is to guess or obtain knowledge from others. (Most other ways I can come up with, e.g. “religion” can still be sorted under these two.)

Obtaining knowledge from others is great, but may not always be available, and the quality of the knowledge derived this way depends on the reliability of the source.

For the other alternative, every sensible metric shows how science is a better method than guessing to derive knowledge.