This will depend on the circumstances of your injury; however, as a general rule; you have 2 years from the date of the incident to submit an application*. If you are under the age of 18 (or were under the age of 18) when the matter was reported to the police, then you have 2 years from the date of your 18th Birthday. If the criminal injury occurred whilst you were under the age of 18, but the matter was reported to the police as an adult, you have two years from the date the matter was reported to the police.
*There are exceptional circumstances where these time limits can be waived.