Help me to complete my react expo snack project

Hi, I developed and App in expo snack, it is all online, I can share with you the code. I manage to retrieve google sheets info, it is a simple app that takes a picture, and collect 3 variables (to track expenses). I need to add this funcionality: a button to take a picture, collect the 3 variables, and save it all to the google sheets. I will need more functionalities, but, by now, I just want to begin with this proof of concept.