SAT is a standardized paper-based test that is an admissions requirement for most undergraduate programs of colleges in the US and Singapore. It is administered by the College Board and assesses high school learning and college preparedness of the student.

Students find it a tough exam for which you need to prepare. It is essential to continue studies further. But is this a single reason to appear for SAT?

The SAT's dominance of college admissions testing was challenged with the creation of the ACT in 1959. Though initially much less popular than the SAT, the ACT took hold in the Midwest and the mountain states and, in 2010, actually surpassed the SAT to become the most popular college admissions test.

https://www.jamboreeeducation.com.sg/about-sat can not only help you take admission in good and renowned colleges but can also bring you good jobs. Often job seekers find out Sat scores and standardize the candidate based on it.
This practice has not been made compulsory one, but mostly considered. So why take a chance of losing a good job. Seat for the exam and get an excellent score to confirm a good job in the future.