Hey Meghana,

Hope you are doing well!

Well dear you may get government colleges with a score of 450.But,getting seats depends on various factors like the number of candidates applied,domicile etc.

Below is the link of the trends of the previous year cutoff's of various government collegs,you may have a look at it,If you wish to:

https://medicine.careers360.com/articles/neet-cut-off-for-government-colleges

Also,I am providing you with the link of the college predictor that will help you in finding all the possible colleges under your NEET score:

https://engineering.careers360.com/jee-main-college-predictor

Hope this was helpful!

All the best!

Keep Smiling :p