No, there is no Instagram help email is available. Instagram help is already available on app and the website. You can take all the guidelines from Instagram in Instagram help center.
For any help, you need to open the app. Tap on the profile tab. Select the three horizontal bars at the right corner. Tap the settings at the bottom. Now you will see many options. Tap on the help center.
Here you can find many short guides divided in few sections. You can get any information there. You just need to follow the guide.