Hi aspirant
No. At this score of 420, and that too from general category it is impossible for you to fetch a government MBBS seat in a government medical college of your state.
At this score you can expect your rank to be around 1.79-1.81 lakhs as it was in NEET 2021. However this may vary this year as it all depends on various factors like the highest score, the total number of candidates and the cut off this year.
You can predict your rank for NEET 2022 using rank predictor with the following link.
https://medicine.careers360.com/neet-rank-predictor?utm_source=qna&utm_medium=neet_rp

You can also predict your college using our college predictor tool with the following link.
https://medicine.careers360.com/neet-college-predictor?utm_source=qna&utm_medium=neet_cp

Now here is a list of all the closing ranks for various medical colleges of Punjab for UR candidates.

• AIIMS Bathinda - 2128
  
• GOVT. MEDICAL
• COLLEGE,PATIALA - 6599
• GOVT.MEDICAL COLLEGE,
• AMRITSAR - 10945
  
• RU GOVIND SINGH MED
• COLL,FARIDKOT - 10598
  

As you can see it is impossible for you to fetch a seat in the state government medical colleges. You can opt for admission to private medical colleges of your state if your finances allow.
Here is a list of all the private medical colleges of Punjab.

• SGRDIMSR Amritsar - Sri Guru Ram Das Institute of Medical Sciences and Research
• Sri Guru Ram Das University of Health Sciences, Amritsar
• Gian Sagar Medical College and Hospital, Banur
• Chintpurni Medical College and Hospital, Pathankot
• Adesh Institute of Medical Sciences and Research, Bathinda
• Punjab Institute of Medical Sciences, Jalandhar
• CMC Ludhiana - Christian Medical College

Hope this helps
All the best :)

Dear aspirant

As NEET results are yet to be declared so saying anything confirm is quite tough and cut off marks varies every year depending upon various factors.

Although you have scored very much low as compared to your category and govt seat cut off marks aren't this much low.

Punjab state quota counseling cut off marks for Gen category students in NEET 2021 was 571 marks in GMC Amritsar

So if we compare your marks then you are far behind and to get govt medical College at this marks is quite tough for you in Punjab state quota counseling for NEET.

Predict your admission chances in MBBS / BDS / Ayush seats,use our neet college predictor tool from link below

https://medicine.careers360.com/neet-college-predictor?icn=QnA&ici=qna_answer

Hope this was informative

All the best