Hi.
The cut off for admission in Medical College, Kolkata was a rank of  49,772 and 448 marks in 2017 for the SC category under the state quota. Hence, you seem to have less chances for this particular college. You seem to have a fair chance in othet Government Medical colleges in west bengal. You can look at the cut off using the link below.
https://www.google.com/amp/s/medicine.careers360.com/articles/neet-cutoff-west-bengal%3famp

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