Is st clements university a legal accredited university?

Yes, St Clements is accredited in several countries around the world. Details of documents confirming the accreditation of various countries are detailed on St Clements websites under their recognition pages. St Clements University in Niue is accredited as a higher education institution by the Niuean government. St Clements University in Somalia is accredited by the Transitional government of Somalia etc....

There is no universal legal accreditation program worldwide for Universities, accreditation is usually done on a Nation by Nation basis.