The Secret BRUTE Battlestar of Season 10 in Week 1, is located south of The Block.
To actually make the battlestar appear, you must complete 3 of the time-limited missions in the BRUTE Squad Challenges.
Once you’ve completed 3 of the 7 challenges in the temporary BRUTE Team missions, you can collect this secret battleship. It rewards you with a Battle Star (a full Battle Pass level) that increases your X Season Battle Pass.