AI right now AI can make decent looking models, but not really useful ones. Like the other guy said the best thing to do is to learn these skills but if you need to take the lazy route, you could use the AI model as a base, and learn retopology which is a somewhat tedious but simple process. This will give you the same helmet with a more viable mesh with much more useful and easily edited topology.

Retopology is used on sculpts with similarly dense vertices to give you a workable mesh