Hii There,

You should concentrate on the SSC CGL exam since it is the entrance exam for the GST Officer position.  There are four main areas covered in the exam:  Quantitative aptitude (number series, percentages, profit & loss, time & work), general awareness (current events, economy, GST fundamentals, polity, and history), general intelligence & reasoning (analytical ability, puzzles, coding-decoding), and English comprehension (vocabulary, grammar, reading comprehension).  Understanding GST ideas in-depth, including its structure, laws, returns, and compliance, is essential for success.  For in-depth information, consult the GST Act and the NCERT books.  You can better understand the format and level of difficulty of the exam by working through SSC CGL past year papers from the previous five years.

I hope this answers your question. Feel free to ask any question.

Thanks