Hello,
For pursuing interior design after class 10th, a student cannot go for Bachelors degree programmes or Masters degree programmes as they require a minimum qualification of class 12th and graduation respectively. Also, job opportunities for diploma in Interior Design is very less.
So, if you want to further go for a bachelor's degree after your Diploma course you first need to complete your 11th and 12th. So I would suggest you to first complete your class 12th then go for Bachelors in Interior Design.
Bachelors In Interior Design is a r years undergraduate course. The program has been designed to offer to eligible students specialization in a wide range of concepts and techniques involved in organizing, managing, and planning the interiors of residences and buildings, by understanding peoples behavior and needs.

B.Sc Interior Design is a 3 year undergraduate course which educate students with concepts of planning, designing, organizing and managing a space according to its function. The course includes detailed study about principles and elements of design.

Hope it helps