Varies from plant to plant, temperature, humidity, airflow, ect.
Mine are in a very hot place, usually 90-95 degrees, I water every day. But basically if the soil is pulling away from the pot, as in theres a gap between the soil and container, you really need to water.
Basically, just slowly pour water in the container, giving the soil plenty time to absorb it till the point it flows out of the drainage holes. Figure out how much water that is. If your plants need watered every 3-4 days, I'd water like 1/4 the drainage amount each day, and on the final day do 1/2 to full drainage amount. Repeat. Takes abit of scheduling cause each plant has different water requirements.