No problems with questions. Unfortunately, I wish I had an easy answer. You seem to have a threadless stem. This is a stem made for a threadless steerer. The bolt on top preloads the whole assembly and the bolts on the side are the fixing bolts that secure everything once it's all adjusted. There isn't a way to raise the height of the handlebar without replacing the stem. You might have one option though. Depending on the angle of the stem, you might be able to flip it over and it will create a higher rise. To do this, you will need to loosen the fixing bolts and the top bolt. Remove the top-cap and pull the stem off the steerer, flip it over and reverse the process. Be careful about tightening the top-bolt. Get things fairly hand tight at first and then snug down the fixing bolt so that the stem doesn't move. Then grab the front brake lever and try rocking the bike. You shouldn't see any shifting around of the headset. If it's moving back and forth, loosen the fixing bolts and then crank the top-bolt by 1/8th turn, tighten the fixing bolt and try the test again. Repeat as necessary until the headset is properly loaded. Make sure you don't overload it. If you pick up the bike, the front wheel should flop from side to side without binding.