PTE practice tests are a replication of the PTE exam. It helps you to get an idea about how much you will score on the actual PTE exam. If you have an upcoming PTE exam appointment, you should start your PTE preparation by setting a target score and pushing yourself to work towards it. You should take the PTE practice test before taking the PTE exam to get an idea of where you stand on the actual PTE exam.
You can easily find PTE practice tests online. Some of them, come with a free evaluation and for some of them you might have to pay to get an evaluation. It is important that you get your PTE practice tests evaluated. You can even ask your trainer to evaluate them so you know which of the areas needs improvement so that you can work on them to improve your score on the PTE exam.