The 7000 series processors are designed to run up to 95°C and even with the decent Wraith Prism cooler bundled with the 7700 it is completely normal for the temperature to reach 85°C under load.
https://www.amd.com/en/products/processors/desktops/ryzen/7000-series/amd-ryzen-7-7700.html
Ryzen R7 5700X | B550 Gaming X | 2x16GB G.Skill 3600 | Radeon RX 7900XT
Ryzen R7 5700G | B550 Gaming X | 2x8GB G.Skill 4000 | Radeon Vega 8 IGP
Ryzen R5 5600 | B550 Gaming Edge | 4x8GB G.Skill 3600 | Radeon RX 6800XT