With right ventricle dilatation where would your Apex beat be if it was misplaced because of the right ventricle dilatation? Left or Right side?

Left side. Left side of the chest, slightly more medial than the usual place for the Left ventricular apical impulse. Either way: why would you like to palpate right or left ventricle if you are not a professional? It is not helpful to (mis)interpret medical findings/tests when you do not have the knowledge of the "big picture", nor it is to read technical details that are not going to make you feel better.