That looks like a stock LED panel, pretty cheap on Amazon/ebay and can be driven directly by a Pi (with a bit of wiring) or more simply via a Pimoroni RGB matri

That looks like a stock LED panel, pretty cheap on Amazon/ebay and can be driven directly by a Pi (with a bit of wiring) or more simply via a Pimoroni RGB matrix driver. Search for 'HUB75' panel and you'll find plenty of stuff to play with.