not competitive enough for GCSE in general because you did not take any humanities/arts subjects like geography, history, etc. It's all science subjects. But congrats!
idk if you're a burmese or not, but in here, most of the schools don't provide such humanities/arts subs as you mentioned above. Hope this clarifies your concern.
It depends on the number of subjects you want to take but the minimum is mostly 6 subjects and you can take up to the number of subjects you want to take. It usually takes 2 years to answer the exam but you can also do it within a year and a half if you can catch up. Hope this helped!
Thank you! For computer science, I mainly focused on the theory paper rather than the coding paper. I'll make sure to upload a video talking about it in detail soon so please stay tuned!!