CBSE class 10 and 12 compartment exams 2022 will start on August 23, 2022, and continue till August 25, 2022. The test will be administered using the Term 2 exam syllabus. Date for Standard Maths compartment exam is particularly not declared yet but it will be informed to respective schools. You can consult to your school administration.
If further any update will be available, I may inform you here in same thread and below same comment.