hello aspirant,
well i will provide you the both career scope and employment opportunities
regarding b.des:
1)placements for bachelor of design:
a) Degree holders are readily accepted in garments, leather, textiles and other fashion related industries
b)Fashion design degree makes one eligible and more competent enough to open their own fashion house to exhibhit fashion skills
c)The salary of an individual holding a bachelors degree in design will get an average salary depending up on job title and the skills.
jobs for bachelor of design:
1)Graphic designer
2)costume designer
3)Design managers
4)interrior designer entrepreneur .
5)weaving consultant
The average paysacle for an b.des graduate is about  405k
regarding bsc interior designing:
1) graduates in interior designing can find ample job opportunities both in india as well as abroad
careers in bsc interior designing in private sector:
a) architectural firms
b) builders
c) independent interior designer
d)Town planning bureau
careers in  public sector:
1) interior designers can get in to government departments through UPSC /ssc tests.
2)The professionals can find job openings in metropolitan and government sectors.
average salary for b.sc interior designer ranges from 276k to 280k depending up on skills
conclusion:
To sumup, both have equal career opportunities and to compare b.des have high career scope and high future scope and high salary packages
thank you