//
// assuming: your form is called "Form1"
//
with TLabel.Create( Form1 ) do
begin
Parent := Form1; // this is important
Left := 50; // X coordinate
Top := 60; // Y coordinate
Caption := 'hello, world';
//
// set your other parameters here...
//
//
// you don't have to set the Name
// parameter, but...
//
Name := 'Label1';
//
// finally make it visible
//
Visible := True;
end;