How do I trun off 2step

Make sure that you're still signed in to iCloud on each of your devices. You might be asked for your Apple ID password.

1. Sign in to appleid.apple.com.
2. In the Sign-In and Security section, click Account Security.
3. Click Turn Off two-step verification. Click again to confirm.
4. Create new security questions and verify your date of birth.

You'll get an email confirming that two-step verification for your Apple ID is off.

Hope this helps!

If you mean two-factor authentication (Apple hasn’t used two-step verification in a while), then no, you can’t turn it off. All new Apple IDs require it.