IMO, given the state of technology and fan expectation, VAR should by-in-large remain peripheral to the game - you shouldn't notice that it's there. Whatever call the ref makes on the field stands - play is brisk with no long reviews by the booth - you'd never notice that VAR was there.
Until, and unless, something dramatically wrong has transpired where the refs clearly have made an error. At this point VAR should step in and correct an obvious game impactful blunder.
I'm not watching all of the WC games this year - I watched all of Portugal v. Spain and the 1st half of Russia v. Saudi Arabia - so far, VAR for me is doing exactly what it should be doing.
But perhaps it's fared worse in games I haven't watched.