Does anyone know where i can find my highest altitude flown in the dji go 4 app? or anywhere?

If you open up your DJI 4 go app you can tap on the triple lines in the top right and pull up options. Third one down should be flight record, tap on that and you can see each flight at the bottom, swipe up and it will list the max alt for each flight.

Opening page of this app one with picture of spark. Top right hand corner 3lines click then go to flight record and in there you can playback all your flights and all your flight detail are there.