I have to go for now but you need to do some research and try and figure out why your score is so low.
Install Ryzen Master: https://download.amd.com/Desktop/AMD-Ryzen-Master.exe
And see what the temperature reads when you run Cinebench.
If the temperature goes too high the CPU will throttle down and give you low performance (low Cinebench score).
You could also download HWInfo and see what it shows (just don't run Ryzen Master and HWInfo at the same time): https://www.hwinfo.com/files/hwi_613_3955.zip