It would be unusual to have calcification of vessels or other parts at a young age...but not unheard of as recent reports indicate.
Usually, the diagnosis with a heart valve indicates degree of blood back flow (regurgitation) and a prolapse indicates the leaflets do not close the valve opening when the heart pumps blood into circulation. A prolapse is not usually a problem and many people go through life without any harmful effects or progression.
Calcification of the aorta can buildup around the valve opening (orifice) and restrict the amount of blood pumped into circulation with each heartbeat. If serious it could advance to heart failure, enlargement of the left ventricle (pumping chamber). A very large portion the aging adult has some calcification. Proper diet, exercise, can slow down the process or stop.
Hope this provides some insight for your questions, and if you have any further questions you are welcome to respond. Take care