Based on the below video, though not the exact same keyboard, you'll need to remove all the keycaps on the keyboard and look for the screws holding the top plate / PCB to the bottom plate.
View: https://youtu.be/hmNSNXQYeEA?si=f0Jqzea8CpcPNhbD
Once you have it disassembled, you'll be able to do your tape mode but make sure you mark where the screw holes open so it doesn't interfere when closing it up.
@Ralston18 - Tape Mod is a mod that the keyboard community does by applying painters tape to the back of the PCB to change the sound profile of the keyboard. It typically gives it a more poopy / deeper sounding and helps with the "pinging" sound that you can get with some keyboards...