What do the green dots on the laptop mean?

What does this green and the red dot mean? Is this the battery?

Image? Model? Anything?

Which red and green point do you mean?

This is different from model or manufacturer to manufacturer. For example, my laptop only has lights of the same color, and they are neither red nor green

You will find out if you consult the manual of your laptop.
You should be able to read, otherwise the question would be pointless here. 😉

"What are these two screws on my car?"

We need more details