Sir I got 277 marks in neet 2019 I belong to St category. Can I get any medical college in Assam?

Dear Pochmi, you haven't mentioned your sub-category (ST-plain or ST-Hill). Nevertheless I am mentioning you the cut offs for different for both of them.
ST-Plain

• Gauhati Medical College, Guwahati-331
• Assam Medical College, Dibrugarh-297
• Silchar Medical College, Silchar-270
• Jorhat Medical College & Hospital, Jorhat-286
• Tezpur Medical College & Hospital, Tezpur-264

That means if you belong to ST-Plain then you have a chance of getting only 2 colleges as per last year cut offs.

ST-Hill

• Gauhati Medical College, Gauhati - 251
• Assam Medical College, Dibrugarh-232
• Silchar Medical College, Silchar-223
• Jorhat Medical College & Hospital, Jorhat-217
• Tezpur Medical College & Hospital, Tezpur-211

If you belong to ST-Hill then you will surely get seat in GOVT medical college under STATE QUOTA.
Also since the exam was bit easy this year so the cut offs are expected to increase this year.
All the best
Hope this helps.