use values from other scripts

How can i make a script and access values from other scripts? Is there anyways to transfer values from script1 to script2 and vice versa? My script is getting a little too big and i want to shorten it down to make it a little easier.

Make a public reference and set it up in the inspector.

public class script1 : MonoBehaviour {
    public script2 script2ref;

    void Start() {
        script2ref.someVariable = 123;
    }
}

Also take a look at GetComponent