First of all, you should know that the average healing time varies depending on the type of piercing. Some parts of your body heal in a few weeks, while others can take several months.
These times are given to you as an indication and depend on each individual, their genetics, their history... Healing times can be longer or on the contrary very fast. Also take the time to choose a good piercer who respects all the rules of hygiene, this will allow you to start on a healthy basis for your healing!
Here are the healing times for piercings depending on the body part: