The games PS4 metacritic score can be seen here: http://www.metacritic.com/
Some of the reviews the game has received so far include:
Blending some of the best features of prior titles with seamless single and multiplayer action, Need for Speed: Rivals hits the next generation head on.
Need for Speed Rivals is a unique, satisfying experience that’s a sheer joy to play
Need for Speed Rivals proves how impressive a PS4 racing game can be by offering a fully realized product that blows past conceptions of what a launch title can offer.
Rivals is fantastically pretty, making great use of your next-gen console or PC. Cars look brilliant, near photorealistic.