To take out the SD card from your GoPro, follow the steps below:
Pull down the latch on the right-side corner of your GoPro camera. Then lift it up to see the battery and microSD card. If you’re using Hero 7 or older, you will find the latch at the bottom of your GoPro. To access it, press the rectangular button, then slide the compartment door.
Take out the battery. Then, gently press down on the microSD card. It should pop out when you release your hold. Gently pull it out.