how to change rotate with script unity

Code Example - how to change rotate with script unity

                
                        var rotationVector = transform.rotation.eulerAngles;
rotationVector.z = 0;  //this number is the degree of rotation around Z Axis
transform.rotation = Quaternion.Euler(rotationVector);
//if you put this in a coroutine and yielding for some amount of time 
//you can have something like a rotating loading icon
                    
                
 

unity rotate towards

                        
                                Quaternion.RotateTowards(Quaternion from, Quaternion to, float maxDegreesDelta);
                            
                        
 

unity rotation

                        
                                // set rotation angles (local coordinates) of an object
gameObject.transform.eulerAngles = new Vector3(xAngle, yAngle, zAngle);

// rotate object by given values
gameObject.transform.Rotate(xDiff, yDiff, zDiff);