I just worked with another user with a similar problem.
https://discussion.fedoraproject.org/t/help-configure-nvidia-drivers-on-dual-boot-laptop/75182/
We need more info from you to be able to assist but there may be a lot of usable info in that thread.
Please post the output of dmesg | grep -iE 'secure|nouveau|nvidia' and dnf list installed \*nvidia\*. The dmesg output should be done shortly after a boot so the data needed has not scrolled out of the buffer.
What I suspect is that secure boot is enabled and that the kernel cannot load the nvidia modules. We can fix that as soon as we identify the exact cause.
The steps in post 2 of that thread should manage the secure boot issue.