VAR is irrelevant when you consider that the most important factor is WHEN the ball leaves the passer's foot. I can show you anything with VAR. I can make the player appear onside or offside. It all depends on which frame I freeze when I arbitrarily decide the ball has left the passer's foot. At that point, Weah may be off, he may be on. It's totally arbitrary.
They released a computer generated graphic showing Weah's silhouetted shoulder was a little ahead and offside. But... again, when did the ball leave the foot? No one knows.