The Wisdom Ability Score reflects your character’s observational abilities and general “gut feeling” about situations. Where Intelligence is focused on “book smarts,” Wisdom tends to fall under the “street smarts” category.
Being able to tell if someone is being truthful with you, noticing the minor details that others seem to miss, or being able to calmly handle animals are all signs of a high Wisdom ability score.
A character with low Wisdom may be naïve to the world around them, scatterbrained, or just not an observant person. I’m personally a fan of the “absent-minded professor” trope in which the character has a high Intelligence but their low Wisdom score means that they may not notice or register something that’s right in front of them.