After installing Legacy GeForce 600/700 nvidia driver from rpm fusion and reboot it’s stuck on this screen
Which version of the driver did you install from RPM-Fusion? Either way, from what I see, this is a very old legacy card, which is not supported anymore, hence whichever version of the driver you’ve installed, it will break things.
I suggest while booting up the system, to edit the GRUB menu and remove the rd.driver.blacklist=nouveau and modprobe.blacklist=nouveau boot parameters in GRUB’s menu entry. Hopefully you’ll be able to enter a graphical session, given that nouveau drivers would be used. If you manage to log in this way, you can change GRUB to permanently use the nouveau drivers, e.g. via grubby.
You can then remove the installed NVIDIA drivers as well.