In general, the lines or dots on a crossbow scope are used to help the shooter accurately aim at a target at a specific distance. It is important to understand how the lines or dots on your scope correspond to different distances, as this can help you make more accurate shots. Typically, the lines or dots are spaced out evenly and correspond to specific yardages. For example, a scope with four dots might have one dot for 20 yards, one for 30 yards, one for 40 yards, and one for 50 yards. The shooter can use these dots as reference points when aiming at a target at a specific distance. Some crossbow scopes also have a reticle, which is a set of intersecting lines that form a crosshair pattern. The center of the reticle is usually used as the aiming point, and the shooter adjusts their aim by aligning the reticle with the target.