Hi, @Ollieswif welcome to the community. Which Fitbit device do you have? If your exercise and or sleep are on the device but not on the "App" (which I assume is the case as you are posting in the app board) then you should review Why won't my Fitbit device sync? - Fitbit Help Center for guidance & advice.
Let us know how you get on by posting here again.
Cheers
Gr4ndp4 | UK
AWAKE! for morning in the bowl of light has cast the stone that set the stars to flight.