That screen connects to SPI0 on the Pi and uses Chip Select 1. Its a 1.3" IPS color LCD (240x240px) (ST7789 driver) which is this screen,
1.3" SPI Colour LCD (240x240) Breakout – Pimoroni
These are the pins used on the Pirate Audio for the screen. Not counting the buttons.
GPIO 7, Pin 26, CE1
GPIO 9, Pin 21, MISO
GPIO 10, Pin 19, MOSI
GPIO 11, Pin 23, SCLK
SCLK - Serial ClocK
CE - Chip Enable (often called Chip Select)
MOSI - Master Out Slave In
MISO - Master In Slave Out
MOMI - Master Out Master In
The pins use by the Pirate Audio are here. If that’s not the one you have change the selection, I don’t think it matters though as far as what GPIO pins are used.
Pirate Audio Speaker at Raspberry Pi GPIO Pinout