Please post the Make & Model of your CPU Cooler.
The Maximum Operating Temperature for your Ryzen 9 is 95c. once it reaches that temperature it starts to automatically throttle to keep the CPU Temperature at 95c or below. If the temperature keeps rising it will eventually reach the CPU Critical Shutdown temperature and shut down the PC to PREVENT damage to the processor and motherboard.
AMD Recommends a AIO Liquid CPU Cooler for this processor since it has a high TDP rating of 105 Watts.
This website offers the best CPU Cooler both Air and AIO for the Ryzen 9 3950X processor: https://tech4gamers.com/best-cpu-coolers-for-ryzen-9-3950x/
By your image of the monitoring of your processor it seems like you have an under-powered CPU Cooler or the CPU Cooler is not installed correctly or it is not working correctly.