The type of clothing that the Shia Clergy members were, the same you also wear, is it only reserved for students having a certain level of knowledge or can it be wore by anyone? Because I found out its how our Prophet used to wear.

You can definitely wear similar clothing to the one our beloved Prophet (s) would wear, even if you are not a student of knowledge. You can wear a long garment (like a dishdasha) and even a cloak. Yes in our era the turban is a sign of being a scholar. So you can just wear a cap (kufiya). It’s mustahab to cover the head. So you can definitely do that if you want. Generally in Arab countries you can find this type of clothing