The APU does support 4k but as far as HDR at 60 FPS, I don't honestly know. Here is the review on that APU : AMD Announces New $55 Low-Power Processor: Athlon 200GE
This is a Low Cost APU with Vega 3 Graphics. The Graphics is not as powerful as some high cost APUs.
Here is 3DMARK Test results using the Athlon 200GE with Vega 3 : AMD Radeon Vega 3 Mobile video card benchmark result - AMD Athlon Pro 200GE,ASUSTeK COMPUTER INC. TUF B350M-PLUS GAMING
This website gives several 3DMark test results with FPS and other tests which might help in understanding the Vega 3 Graphics Specs: AMD Radeon RX Vega 3 GPU - NotebookCheck.net Tech
According to the Tests running HD Games, the maximum FPS for 1920 x 1080 is less than 29 FPS. Only 2 or 3 games had FPS higher than 25 FPS using the Vega 3 iGPU.