If you turn the pre count off, you can start recording at your curser location. But that’s not your problem…
A pre count is giving you a click for a specified number of measures, so it must begin at the start of a measure. It’s not common to count off starting in the middle of a bar.
But if you DO want to do it that way, open the metronome setup, and you can create a pre count of any length by ticking “use signature” and changing it to the number of beats you want for a pre count.
Or you can change the time signature of that bar so you are recording on the downbeat, if that’s what you want.
Or you can punch in.
Without the context of seeing your situation, I think the best thing is just to allow cubase to begin recording at the start of the previous bar.
Hope that helps…