Q.Watering beans
When the beans are first put in ground, do they need to be watered right away or wait until the sprouts come up?

Beans need adequate moisture. I would water them after planting so that the soil surface is evenly moist (but not damp/soggy) then water them about once a week or more frequently during dry weather.
For more information on growing beans, please visit the following link:
https://www.gardeningknowhow.com/edible/vegetables/beans/tips-for-growing-beans.htm