How to bring background transfers to the foreground?

This should be a simple task but for some reason I cannot find any option that allows me to bring the background transfer to the foreground.

It's not possible.
What is your use case for this?

You mean you can't see a use case where you would want to check on your background transfers. Maybe see how far they have come, maybe to cancel the operation altogether or maybe figure out if you can close the program and restart your pc already.

It shouldn't have been implemented without an undo function built in, that's just basic HCI.