If you are confident that you can handle the GST portal yourself without any errors. then you dont need to visit GST Suvidha Center. But it's good practice to visit your nearest GST Suvidha center. Because they are highly experienced in GST releted task. So in case you have submitted any wrong detail then they can assist you, what should you do next?
Overall you can pay your tax, get your GSTIN number, and all the GST Compliance on the Indian government GST portal and app. So use them first if you face any kind of difficulties then visit GST Suvidha Center.