No, the Xiaomi Redmi Note 8 Pro is not waterproof. Although it comes with IP52 rating but that is for splash-proof only.
For water-resistant, the rating should be IP67 or IP68.
Check out what IP rating means-
Check the device's full specifications Xiaomi Redmi Note 8 Pro
The Xiaomi Redmi Note 8 Pro comes with the usual 60Hz display which is quite a little surprising as the MediaTek G90T processor of the device supports the screen refresh rate of 90Hz.
Check Full Device Specifications Xiaomi Redmi Note 8 Pro