Can I delete this file?

Yes, you can probably delete it if you no longer use the Apple Developer/WWDC app, but there are a couple of checks to be made first.

group.developer.apple.wwdc is an Apple App Group container stored in ~/Library/Group Containers/

App Group containers are shared data folders used by apps and extensions from the same developer team.

Apple's documentation confirms that app groups are used for shared storage, preferences, downloads, and other app data. 

Accessing app group containers in your existing macOS app | Apple Developer Documentation

Before deleting suggest

Open Finder → Applications.

Check whether Apple Developer is installed.

If it is installed and you still use it for WWDC videos or developer content, leave the folder alone.

If the app is not installed (or you never use it), the container is generally just leftover data and can be removed.

ImAlekz wrote:

Use with your own risk, be sure you don’t need the folder

sudo rm -r ~/Library/Group Container/group.developer.apple.wwdc/

That’s bad shell syntax because of the embedded space — either double vertical quotes around a full (no ~) path, or a backslash escape within the path — and the command will either return two errors, or will delete the contents of two unrelated directories.

sudo rm -r ~/Library/Group\ Container/group.developer.apple.wwdc/

I’d also have backups first (OP was elsewhere reporting they lacked backups), and would review the contents of the path.

Use with your own risk, be sure you don’t need the folder

sudo rm -r ~/Library/Group Container/group.developer.apple.wwdc/

weeklycod wrote:

can I delete this file

Official Apple Support Community

Folder???

Since there is no /Library/Group Container

seems a woefully inadequate way to present the question with a truncated image...(?)

It seems the full path would be

~/Library/Group Containers/

Might be worth going back to your previous queries...for review

ref: can I delete daemon container. it is in u… - Apple Community

weeklycod wrote:

can I delete this file…

This file:

~/Library/Group Container/group.developer.apple.wwdc

Can you delete it? Sure. But have a backup or two, first. Then try deleting it. Let us know if something breaks.

steve626 wrote:

Shouldn't this be

~/Library/Group\ Containers/

I don't see a folder named

Group Container

only one named

Group Containers

Yep.

Shouldn't this be

~/Library/Group\ Containers/

I don't see a folder named

Group Container

only one named

Group Containers