With 51 percentile in MHT CET and belonging to the SC category from Maharashtra, it is quite difficult to get admission in high-demand branches like Computer Science, AI/ML or related field at RAIT Navi Mumbai. These branches usually require a much higher percentile, even for reserved categories. However, you may still have a chance in other branches like Electronics, Electrical, or Instrumentation, where the cutoff is gernally  lower. You can also explore other  engineering colleges with slightly lower cutoffs that may offer CS or IT courses within your range If CS or AI/ML is your strong preference, preparing again to improve your score could be better option.