According to AMD Specs on your Pro 4750g it is locked as far as overclocking goes: https://www.amd.com/en/products/apu/amd-ryzen-7-pro-4750g
But you can change the TDP Rating to a higher TDP if it is set at 45 watts in BIOS. If you change it to 65 Watts it should be more powerful than at 45 watts.
Also you can see if in Ryzen Master you can overclock it but since it is locked probably not.