i’ll give this a try but the question is confusing.
on the transport bar you can setup the time signature.
In your case you have chosen to have 7 times an 8th note to be 1 measure.
So cubase shows every 7 times an 8th note as one measure in the ruler on top of the project window.
that signature is independent from any BPM and the same thing counts for the ruler
so it doesn’t matter how you set up things but it is important for things like the metronome
on 7/8 you get 7 beeps before you go to the next measure
on 14/16 you get 14 beeps on the same tempo.
7/8 is thus the same as 14/16
This can look like it is tempo related but it isn’t.
it is just the way you want your project to be presented on the main window.
BPM stands for beats per minute. standard you get 120 beats per minute, regardless of what time signature you use.
Metronomewise the BPM counts each half second (bpm 120) as a “beep” also regardless of the time signature.
the higher the bpm the faster the beeps go, but they allways count following your timesignature.
so the tempo is used for adapting to your needs/feeling on how to play something and not on what time signature you want to do this.
The only thing where the signature and tempo are important is when you start modifying things f.e. with quantisation.
there you define how you want to correct your recorded data to your choise of “grid”.
you should spend some time in getting used to the basics of recording data on a daw.
it isn’t that difficult and it is very logical.
do some trial and get used to the feel of it.
and probably you will get a feel for it.
hope this helps,
kind regards,
r.