I did gold D of E (and bronze and silver too obviously) many, many years ago.
It was heavily pushed at my school and we were told gold was worth an A level! It wasn't of course.
No university or employer ever showed the slightest interest in my having done my gold D of E award.
I did get to meet prince Philip - he reminded me of the fake clockwork toys in Chitty Chitty Bang Bang. That was all a bit surreal.
I found the mountain climbing element of the expeditions torture but perversely enjoyed it - I would happily have cheated and walked around Scarfel Pike but my group wouldn't let me :o
I still look back on things I did though, and it was so long ago it must have made an impression.
I did swimming for my gold sport - just solo - you could get almost anyone to sign it as far as I remember.
For the voluntary work part of gold I asked at a respite care club for disabled children and absolutely loved working there one Saturday morning a week, and actually kept going once I finished the amount of work I needed for my D of E credit. For silver I did one of those Cathedral Camp holidays - they probably still exist. We white washed the interior walls of a cathedral side chapel thing and slept in an attached hall, like camping. I have no idea why I did that as I am not remotely religious, but it was a cheap or free week away without parents as well as counting for D of E...
I think it is quite a good way to try things you'd never otherwise have done as a teen, makes you a more well rounded person etc. I don't think it is remotely useful for your CV though, unless you have nothing else on it aside from your GCSEs, not even hobbies to talk about...