How can I fetch data from firebase database

[Kipngetich Evans]

Hi Community!

I am developing some sort of a planting calendar for local consumption and my data source is Firebase real-time database. Data in the database is in the form of json data format with coordinates, crops planted and some other fields. How can I be able to fetch the data from firebase and plot them as bubble maps, where the more a crop is planted in  a certain area the more its size grows, because the values I have are not numeric

Thanks I will appreciate any feedback!