Hi Louay,
there are normally two tests you have to do at Deloitte:
- Numerical: 20 questions in 20 minutes
- Verbal: 24 questions in 18 minutes
SHL should be ok as preparation for both. You can find a more detailed description at the following link at Step 3:
https://www.graduatesfirst.com/portfolio-items/deloitte/
Best,
Francesco