I see that all brand bikes specialized trek Scott cannondale canyon or giant dont have any road bikes in the large/58cm range online or in store.
Is this the norm everywhere because of COVID

Yes, though stock should soon be replenished, as the 2021 models are being released.

Covid is effecting the supply chain for All bikes, tubes repair parts , and so forth & so on ..

My local has added brands to just have something ... it's a Mountain bike market here , priced under 1K$
& 1st bikes for kids..
& E bikes for much more..






...

The bike rush is ending. My local Trek store has three Emonda SL7s in a size 54. Last month they laughed if you asked. Scott just released 2021s and there are plenty now. The Addict and Addict RC are nice bikes.

There are plenty of Large road bikes in stock at Canyon:

https://www.canyon.com/en-us/road-bi...=true&prefv2=L

I've heard from a few shops that road bikes under $3k are nearly impossible to get right now, regardless of size.

There is practically nothing available in my area, only a handful of used bikes.