You can find the completed project under the course resources: https://www.appbrewery.co/p/ios-course-resources/
Note, this app will NOT run in the simulator. Also, the FlowerClassifier is not included in the Github repo as the file is too large. You'll need to add this .mlmodel file back yourself.
If you've got some niggling bugs or there is something wrong with your code that you can't figure out, compare your code against the finished version of the app.
Simply clone the project from Github using Source Control → Clone inside Xcode. If you need a refresher on cloning repos, have a look at this lesson from the Dicee module: https://www.appbrewery.co/courses/ios13-development-course/lectures/11743810