How to show component value on Altium Silkscreen?
It's not possible unless the value is stored in the component's Comment section. So if you put the value as a Parameter then you can't make them visible in the PCB design.
In the schematic design, put the values into the Comment section for each component and update the PCB via Design -&gt; Update PCB Document. After transferring the modifications to the PCB design, select all components and open PCB Inspector, then tick Show Comment. That's the only way.