The amount of claim will depend on how serious is your injury; the more serious, the higher the amount. Some of the factors that can influence your claim are listed here.
For example, you have suffered a whiplash injury, the amount of compensation will depend among other things, what grade of whiplash injury ie from grade 0 to grade 3.
A simple illustration can be found from State Court of Singapore’s Guidelines for the Assessment of General Damages in Personal Injury Claims