In Arrow Science, you'll have to take aim and shoot at different targets to score points and complete the level. You can score more points by shooting at the targets from the right or left side of the screen. The targets are placed at different levels and the difficulty increases as you move forward. 

The targets in Arrow Science are made of different materials, like wood, stone, glass, metal, etc. They can be damaged by bullets and lasers, so make sure you aim carefully and shoot straight! Also, don't forget to collect the apples on the level. They are very important, as they will help you to score more points and complete the level.