Hello Imranakram1324,
It looks like you're having an issue with your workouts completed on your Apple Watch syncing with the Fitness app on your iPhone.
First, let's ensure that your Apple Watch is updated to watchOS 7.0.1. You can check on your Apple Watch app on your iPhone by going to My Watch > General > About > Version. If you're not updated yet, let's have you do so as shown here: Update your Apple Watch
If you're updated to watchOS 7.0.1 and iOS 14.0.1 then let's try restarting both your iPhone and Apple Watch as guided through the steps below.
Restart your iPhone
How to restart your Apple Watch
Additionally, check out this article for help with getting Activity synced: If you're missing Workout GPS routes or Health data after updating to iOS 14 and watchOS 7
This should help to clear that up for you, but feel free to reach back out to the Community if you need further help.
Take care!