am not so good in accounts, so which speacilisation is good for me to take in mba after finishing my bbm course? wheather hr or marketing?

you can take marketting or HR you can also take foriegn trade as a stream

In MBA there is a core subject Financial management, beside this you have to choose the electives in 2nd or 3 rd sem. In that you can choose sales and marketing, retail, IT, HR is best, operation, Rural management, personnel etc.

in spite of that you can look for HR but you find it difficult then you can go for marketing,one thing you must insure that you must be strong enough to tolerate sales pressure in marketing line.