How to access Keyboard on Watch SE?

You're welcome. The screen on Apple Watch SE is just too small to make a keyboard useful. Hence why Apple likely didn't make it available on the SE to begin with.

You can tell Apple what you would like to see added via

http://www.apple.com/feedback

Apple Watch SE does not have a keyboard. If you wanted a watch with a keyboard, you would have needed to buy Apple Watch 8 or Apple Watch Ultra. You can download an app from the App Store called FlickType, which will add a keyboard to your Apple Watch SE. Personally, even with my 49mm Apple Watch Ultra, typing on the keyboard is not easy. It would be even less so on the much smaller Apple Watch SE.

You gotta be kidding me

use Crown as 'roller' to select letter , one by one (see Audi interface for navigation)

it's Apple being lazy it seems

ps. no keyboard is available on external device in Family mode setup for apple Watch