aprx = arcpy.mp.ArcGISProject(r"S:/Initiatives/Mailings/MailOuts.aprx")
lyt = aprx.listLayouts("Buffer Map")[0]

mapType = lyt.listElements("TEXT_ELEMENT", "Map Type")[0]
mapType.text = arcpy.GetParameterAsText(0)

location = lyt.listElements("TEXT_ELEMENT", "Location")[0]
location.text = arcpy.GetParameterAsText(1)

schedule = lyt.listElements("TEXT_ELEMENT", "Schedule")[0]
schedule.text = arcpy.GetParameterAsText(2)