BBA Scope

See commerce with IP is good which means you want to learn computer to its highest level, whereas, these two courses BBA & MBA are related to management field. Technology is in daily use, so for these two courses, basically, you should have good knowledge of computers.
1. MS-Word
2. MS-Powerpoint
3. MS-Excel
4. MS-Access, in some cases
5. Tally
6. Fast typing is a thing which everyone should learn.
And where about extra knowledge gaining in computers is good there is no harm in learning coding and creating software of general use.
As far I have seen, IP is the most scoring subject so it's good to opt.

Distance education from anywhere is not worth and won't land you in job.
Distance education is only helpful to people who are already working in some company and are in good position, to just complete their educational qualifications they take degrees by distance education.
Bachelor degree is not advisable to be taken via distance education although at Masters level (MBA) can be helpful in long run that too if you have some working experience.

You have to do Masters also to go pursuing MPhil. Get a minimum percentage of 55%. Study the basics of your chosen theme and research methodology.

IGNOU requires B.Sc Home Science with specialization in Food and Nutrition, Dietetics and Clinical Nutrition
or PG Diploma in Dietetics and Public Health Nutrition or its equivalent for Masters in Dietetics and Food Service Management.

After BBA, MBA is always a better option.
Prepare for CAT and go for MBA.

You are advised to appear in CDS exam conducted by UPSC to join Defence Services as Commissioned Officer after BBA.

IIHM
IHM
Christ University
T.John
Bangalore University
PESIT
Reva University

Masters of Business Administration would be a better choice.

Institute of Banking Personnel Selection (IBPS) conducts a joint Common Written Test (CWT) which is required to be cleared by every aspirant of bank Probationary Officer Examination.
As per latest notification issued by IBPS, candidate who wish to appear for IBPS Common Written Test must have did graduation from a recognised University with minimum of 60% marks in aggregate.
Therefore as per IBPS eligibilty criteria you can appear for PO examination on the basis of BBA subject to satisfaction of other eligibilty criteria.