Hey,
The cutoff is subjected to variations every year depending upon the number of candidates appearing for the examination,the difficulty level of the question paper and the reservation category of the candidates. This year the cutoff went too high.
If we take into consideration the previous years cutoff,then for a SC candidates,a score above 430 will get you a government Medical seat.
I am providing below the link to the article of previous years cutoff in Assam:
https://medicine.careers360.com/articles/neet-cutoff-assam
Hope this helps you.
Good luck.