Hey! I'm Scarlet, a final year law and criminology student at Sheffield Hallam.
I have found that the most common form of assessment I have had is coursework, however this all depends on your university and the course. If you are particularly concerned or curious, then most universities have course and module pages on their website, so you can look at how you will be assessed in a bit more detail. For my course, we have been given the option to select some of our modules for second and third year, therefore we have been given the option to choose modules with either exams or coursework, so it may be the same for you!
Try not to worry too much about exams, I know they can be stressful, however I have found my exams have gone better than expected! I hope this helps, Scarlet - Sheffield Hallam Student Ambassador.