Hello Aspirant,

Yes 190 is a good score in NMAT, but it's quite difficult to get a call from NMIMS  campuses. You can get the call you have good academics background and have exceptional record in extra curricular activities. Because the college which accepts NMAT score give 30% preference to gd, pi, academics and work ex. So if you aren't Satisfied then you can apply for other attempts and prepare well for it.

Here are some relevant articles,

https://bschool.careers360.com/exams/nmat-gmac/amp

Hope this information helps and

All the best for the journey ahead..!! :)