Probably, you are missing out on where to check test details. You should sign-in into his HTCampus account and go to 'MY ACCOUNT' and look at the bottom right side of the page and locate 'MY TEST ANALYSIS' to check your result.
You will get score for your sample test only if you have completed and submitted your test. You can give a test only once.
You will receive your sample test score on e-mail id registered with ht campus and you will also get SMS regarding the mail.
All the best !!