BAMS

Hi,
This depends upon the university management because different colleges/management has different rules but as per the rule, you can produce duplicate one.

No, you cannot. You need to score a minimum of 50 percent marks in HSC.

If you go for government jobs then you can expect a starting salary around 40-50 thousand. but if you practice on your own clinic, then the salary will vary.

Preparation of BAMS and MBBS can be done simultaneously as the basic structure of the questions are same.
But it does help to have a clearer target trying to achieve the goal becomes much easier.
All the best!

MBBS has more scope than BAMS.

Yes, you can pursue BAMS after a gap of one year.

Any Masters course guarantees a high income as compared to graduation.
All the best.

MBBS from abroad has more scope than BAMS in India. BAMS is very less preferred because of limited scope. But, MBBS is treated well in all countries and after MBBS and MD, the starting salary or practice will be much better. Also, an MBBS degree from abroad has high value in India.

I will suggest you to pursue career in BAMS because that will provide you a doctor degree.
Al the best.