Hello Pratibha ,

I hope you are doing well and good. As per your mentioned query , after the completion of BCA course , Master of Computer Application (MCA ) is the most relevant course you can do. Other options include :

• Master of business administration (MBA)
• Master's in Cyber security
• Master's in Data science
• Post graduate diploma in computer applications (PGDCA)

To know more courses , kindly go through the given link:

https://www.careers360.com/careers/articles/career-options-after-bca

I hope this helps !!