Is there an outdoor climbing acitivty

Via Ferrata track superb with Mountaineering. I think that’s a match. At least for me. 

Rock climbing is harder. If you speak of rock climbing like climbing in crags (Klettergarten) where you have several routes next to each other (like indoor climbing but outside), there is no real thing for that. It was asked for in Fenix 7 but didn’t help. 

'like indoor climbing but outside' is the funniest way I've heard rock climbing described

Coros has managed to provide a dedicated multi-pitch activity which works great. My Climbing-Buddy uses it and I'm a bit jealous about it, as Garmin is not able to provide it since years of demanding. Seems its rocket-science for Garmin.

I think what you are looking for is the bouldering activity

I have a feeling that no one from Garmin is reading this forum, as the topic of outdoor climbing really comes to life here from time to time. It seems there's a huge demand for it, but no—Garmin is just flipping the middle finger to the users 

damian said:

I have a feeling that no one from Garmin is reading this forum,

Since this is essentially a peer to peer forum that's likely true. If you want Garmin Support contact Garmin Support.

You could, but it hardly helps. They just answer with standard phrases and have no clue what you're talking about. 

Someone could be paid to write an IQ app that does it.