I would highly suggest leaving him alone for a while. Allow him to settle in, it's only been a week. I know you want to handle him but you need to be patient if you want him to tolerate your presence. You are a huge, unknown creature, he is a prey animal, if he thinks you are going to grab him every time you walk up to his box, of course he's going to struggle. If a predator grabs you, you go into fight or flight mode. If you can't flee, you better damn well fight your ass off if you want to live.
That said, let him relax in his new digs. Change his water, monitor the temps, that's it. Allow him to become comfortable in his own area, let him feed in peace, and once he will bask in your presence without startling, you can start slowly introducing yourself in a non-threatening manner.
First just stand by the cage. Then, after a few days of that, open up the door for a few minutes, close it, walk away. Then, eventually, place your hand inside NOT neat the lizard. Then place your hand inside and offer food (as in dump a few crickets or what have you). Then place your hand inside and offer food from tongs. Don't be pushy, move at the lizard's pace. If he runs, try again in a couple days. It can take weeks.
My Savannah with come up to me if I open the door (not because I'm interesting or her buddy, she just knows that ME OPEN DOOR often = FOOD. The trick is to make your presence reinforcing. Get over any notions that your lizard will be your friend. They will tolerate your presence, they will tolerate being handled, but if they could, they'd probably avoid you at all costs.
Now, since most people don't know what they're doing when it comes to these beasts, please share a description of your monitor's enclosure so the forum can help educate you on proper husbandry. There is a ton of information to be absorbed if you're open to it.
Best wishes.