This is an idle idle game, lots of waiting involved, oncve you max your equipment gold has no use until you get 30 uncommon drops for the tier upgrade, can't do anything but wait for those to drop, you need 360 for all you equip to tier up to the next level. After about 30 minutes I have 12. I bet there will be drop increases but there is nothing at my current level.
So I'm just looking at this screen until I get another 100 levels which should take about 200-400 seconds, nothing to do.

Thank you.