I found this suggested circuit:

At this thread: https://electronics.stackexchange.com/questions/166301/using-a-microcontroller-adc-to-measure-a-4-20ma-sensor
There are many commercial solutions to use 4-20mA with microcontrollers, i.e.:
https://www.mikroe.com/4-20ma-r-click
Or you can use INA260 to measure current directly like this guy did (note: INA260 is not ideal for low current):
https://www.youtube.com/watch?v=GzxyzwyHRN0
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