"there is no right or wrong" meaning

[Minyatur]

In truth there is no right or wrong. (1.7)

The Law of One /.../ may be approximated by stating that all things are one, that there is no polarity, no right or wrong, no disharmony, but only identity. (4.20)

How do you understand this statement?

If you see things as with rights and wrongs, you can only be stuck emotionally blocked failing to reach acceptance toward the Creator reflected.

People often separate among people how they feel (very 3D), yet how they feel for any individual is at all times projected upon all others. Like GW said, it is a focus of 6D to seek to see unity, how each expression enables all others and is enabled by all others in an intertwined manner in which there is no separation. If all is One, then is this One all right or all wrong across all things that reflect what it is? I think It merely is always what it is labelling it in many ways through subjective focuses.

tl;dr : It is a perspective of confusion, fighting one's own infinite nature as Creator. The moment you have made any single thing wrong, you've began projecting the essence of what all things fundamentally are as wrong.