In this case,
There is not much glory in it isn't really using
glory with it's dictionary definition.
Glory technically means
high renown or honor won by notable achievements according to the Google Dictionary Thing. However, the whole phrase can mean that the thing in question could be boring or somewhat uninteresting.
It could also mean that the thing in question is not very rewarding or interesting compared to other things, which I believe is the right answer in this case. See the examples below for this use.
Today addiction medicine is an urgently needed specialty, but there is not much glory in it compared to other areas of medical work. Taken from here
Here, work in addiction medicine isn't necessarily less honorable, but is just less interesting than other medical work.
"For the worker you got to do your job all the time and there is not much glory in it"
Here, the worker's job is being described as less interesting than it otherwise might be. Taken from here