Hello Farhan!

It would have been helpful if you mentioned the exam name as well.

Assuming you are talking about NATA, there are 2 sections : Part A(Drawing test for 10 questions and 100 marks) and Part B(PCM, aptitide questions). According to the revised guidelines, part A of NATA will have MCQ and PTQ questions and it will not be drawing on paper. And it is required to attend both the parts.

If you are talking about JEE Paper 2, then it has 3 sections for B.Arch : Math, Drawing and aptitude. If you do not attend any section then you will lose the entire marks for that section.

Now, if it is any other exam kindly mention. Also, you might feel less confident about drawing part now, but with practice you can definitely improve it. So put more efforts and you will be confident in drawing section too.

https://engineering.careers360.com/articles/jee-main-exam-pattern

https://engineering.careers360.com/articles/nata-exam-pattern

All the best!