I have a very basic shape that my wife created in SU pro 2021. It is 25.75 inches in height. We have access to a plotter and she wants to print the side view of the shape to scale so that she can trace the image onto wood, cardboard or whatever material she chooses.
Select a paper size that is appropriate for the size of the model.
In SketchUp set the camera to Parallel Projection, choose the appropriate standard view, and create a scene. Save the SketchUp file. Open LayOut, choose a paper size large enough to show the thing at full size. Then File>Insert, select the SketchUp file. Select the viewport and in the SketchUp Model panel choose the 1:1 scale.