Im attempting to write an arcade expression an i'm a little lost. I have a layer where each day features are added for each county in our state along with a count for how many new COVID-19 cases occurred that day. I would like to write an expression that returns the sum of the count field for each individual county. If done correctly the expression would combine the daily cases for each individual county and i would be able to symbolize a map with the total cases for that county.
Can anyone point me in the correct direction?