Windows 7

I’m running windows 7 and can’t use the new Cubase 10.
I have 6. And want to upgrade is that possible?

Yes.

How?

What?
You can run any lower version with a 10.5 license. So update to 10.5 which is the only update you can get officially at the moment, and contact Steinberg support for the installer of the earlier version you want to run.