A socket faceplate looks like a small accessory, but changing it disturbs the circuit's live, neutral and protective connections. A replacement that powers a lamp can still have a dangerous defect.
Read Safe Isolation first. The person doing electrical work needs the competence and equipment to identify the circuit, secure isolation, verify absence of voltage, make the connections and complete the appropriate inspection and tests. This lesson explains the issues to recognise; it does not establish those practical skills.
Building-control notification rules vary with the jurisdiction and work. A like-for-like replacement may be non-notifiable, but that does not remove safety requirements. Use a registered electrician when you cannot meet them; this course leaves bathrooms and shower rooms to professionals.