Hi  @ayushraj7012933 

Thanks for your reply,

I did this part :

1. Clear Cache
   Try clearing cache using:
   cache.do
   Then reload UI Builder.
2. Yes I have already added Category field first into section .
   Dependent Field Check
1. If Subcategory is dependent on Category, it may not appear unless the parent field is available in the section.

Remaining other options also I tried , but still not able to see 'subcategory' field in list to add into Section