In Season 5 there are hidden Battle Star locations when completing all of that week’s challenges. You can find these challenges under the Road Trip Challenges that will reward a Mystery Item skin for completing them. This week we can see in the loading screen reward that the hidden Battle Star is located between Pleasant Park and Lazy Link right where the umbrella shaped dig site is.
Remember in order to get this Battle Star you much have finished all the challenges for that week, otherwise the star will not be there for you to collect and you much play out that match. If you select the option to leave the game you will not get credit for the Battle Star. The Battle Star counts as a full Tier to help you move up on those rewards faster