Hello,
Shri Ram College of Commerce (SRCC) is a government college under University of Delhi. Established in 1926, It is one of the top college for commerce in India.
SRCC does not offer any course in applied mathematics. However you can opt for following courses
B.Com
B.Com Hons
B.Sc Mathematics Hons
The admissions are conducted by Delhi University every year in the month of May-July. However due to current CoVID pandemic the admissions are delayed for this session.
The fees for above course is around 20-25k per year.

Follow this link for more information on DU Admissions
https://www.google.com/amp/s/university.careers360.com/articles/du-admission/amp

Good luck