Prepare the cream cheese mixture by blending softened cream cheese, powdered sugar, vanilla extract, and lemon juice until smooth. Fold in fresh blueberries.
Assemble the wontons by placing about 1 tablespoon of the mixture in the center of each wrapper, moisten edges with water, fold and seal.
Preheat air fryer to 350°F. Lightly spray the basket with cooking spray. Place wontons in a single layer and air fry for 8-10 minutes until golden brown.
Remove wontons from air fryer, let cool for a few minutes, and serve warm. Optionally dust with powdered sugar or serve with fruit sauce.