It depends who has submitted the Application – whether you did it yourself or it was done by the State Service Centre on behalf of your Group. So either you receive it directly on the email you’ve specified in the Application Form, or State Service Centre will send you a congratulatory email.
If you receive notification directly please advise the Grants team so that they are on the look out for the deposit of the funds connected to your grant. The monies are paid into the bank account on your application, which should be the Scouts NSW state branch account.