Not sure what I’m doing wrong. Thanks.
Which operating system are you using? (Your profile says Windows 10, but you have posted on the macOS board 
)
If you are using a Mac, Hold down both ⌘ and Ctrl while using the scroll wheel.
(see: https://manual.audacityteam.org/man/zooming.html#wheel)
I’m on my iMac today, sorry I’ll update that. Thanks very much for the reply!
No problem. If you use more than one OS, you can leave your profile at whichever you use most frequently, but if you post a question about the other OS, it will save confusion if you mention in the post which machine you are on.
Did that fix it for you?