Nothing to do with "score",
just an observation some might find of interest, especially if you're usually more concerned about "age" than score:
The G-1's on mature bucks tend to begin higher above the head than what you'll typically see on younger bucks.
Notice the distance between the hairline and where those G-1's begin coming out the main beams.
This is just one of many antler "characteristics" that tend to be more prevalent with older bucks' antlers.
Antlers are generally a poor indicator of age, but there are still certain characteristics which are most often indicative of older ages. One of the best is basal circumference (for most TN bucks I'm talking something exceeding 4 1/2 inches), although some fully mature bucks will have "skinny" antlers. Comparing the diameter of the main beams right above the hairline to the diameter of the eyeballs is a quick way of estimating this basal circumference. If the antler appears wider than the eyeball, you're likely seeing an antler circumference exceeding 4 inches.
Another "older" trait is "fat" tines, but again, some will have "skinny" tines. Beam length can correlate well with "older", but it can be harder to guess, compared to just saying "fat" or "massive bases". Of course, antler width can be useful in separating most yearlings from 2 1/2 and older, but some older bucks will have "narrow" racks of under 15" (less than from ear tip to ear tip).
Putting together multiple antler characteristics, you can sometimes use this info to help make a quick field decision, especially if it matters to you whether you're about to pull the trigger on a 3 1/2 or older buck vs. a 3 1/2 or younger buck. These "older" traits tend to stand out more at 4 1/2 and older, but most particularly at 5 1/2 and 6 1/2 when mature bucks are typically still in great health. So when I can't get a good look at the body, I'm quickly trying to study those antler characteristics for age clues, mainly to avoid killing a "top-end" antlered 2 1/2 or 3 1/2-yr-old buck (the ones which could turn into true monsters only by living another year or two).
Body profile (especially during the rut) is usually a much better age indicator than all the antler traits combined, but sometimes you don't get to see much body, but do get a good look at the antlers.