I have never use auto build marlin. We use platformio to build the Marlinbuilder releases. I would not expect upload to work for any skr board. You copy the firmware.bin to the micro sd card and then start the skr with the sd installed.
I am using VS Code with Platformio and I has always worked for me in the past but for some reason it will not do the Build or upload function anymore .
The image you shared shows marlin auto builder.
There are also build buttons in the “vanilla” vscode, but you need to use the platformio buttons.
Upload will not work with the skrs. At least not the pro, and the previous firmware needs to be set up a particular way for it to work on an skr 1.3 (and our firmware is not set up that way).