Au courant and Know the score

Au courant adjective - Keenly aware of and responsive to the latest developments especially in fashion and entertainment.

Know the score and au courant are semantically related In some cases you can use "Know the score" instead an adjective phrase "Au courant".

Know the score verb - Be well-informed.

Au courant and know the score are semantically related in cognizant topic. Sometimes you can use "Au courant" instead an adjective phrase "Know the score", if it concerns topics such as knowledgeable.