Yes, I believe with a Score of 400/720 in NEET, being from SC Category and West Bengal Home State, you'll have fair chances in securing a seat in MBBS, at some of the Good State or Government Medical Colleges with strong faculty, infrastructure and hospital facilities.

For more information about NEET MBBS Cutoff for West Bengal, Category and College wise do follow the link below

https://medicine.careers360.com/articles/neet-cutoff-west-bengal/amp