energy goes to the grid when my battery not full!!

Hi, just wondering why my system is putting energy back to the grid when my battery isn’t charged up?

In this case the inverter hadn't yet reacted to a change in household load and or PV output at the time the snapshot was taken by the app. It is nothing to be concerned about as it is instantaneous, you'll almost always see some very small import/export unless you are exporting or importing a lot.