apple watch does not show 6 digit code

Hi there, jaclyn106!

Thanks for reaching out to the Apple Support Communities! It sounds like you're having an issue pairing your Watch to your iPhone. The 6 digit code you're describing sounds like Two-factor authentication for Apple ID. You'll need to get the code from a different device signed in with your Apple ID then enter the code on the Watch.

"What if I can't access a trusted device or didn't receive a verification code?

If you're signing in and don’t have a trusted device handy that can display verification codes, you can have a code sent to your trusted phone number via text message or an automated phone call instead. Click Didn't Get a Code on the sign in screen and choose to send a code to your trusted phone number. You can also get a code directly from Settings on a trusted device. Learn how to get a verification code.

If you use iOS 11.3 or later on your iPhone, you might not need to enter a verification code. In some cases, your trusted phone number can be automatically verified in the background on your iPhone. It’s one less thing to do, and your account is still protected with two-factor authentication."

You can check out this article If your Apple Watch isn't connected or paired with your iPhone for additional steps you can take.

Have a terrific day!