Resize a Sprite Character

I have built a character/sprite but it’s to big (scale) in the scene. How do I reduce the size of the character to scale with the scene?

Every gameobject has a transform component, there you can edit the scale, as well width and height seperately. It can be accessed by selecting the object, which should switch the inspector menu to that gameobjecty. Try playing around with it a bit to see how it works so you can fit it right.