The distance can vary from state-to-state. In California, you may drive in the middle of the left turn center lane for no more than 200 feet.
In Arizona, the center lane can be used for turning. It is important to be aware that people can move into the center lane in either direction.
Drivers from either direction may use the center lane for left turns.
right lane
centre
In Texas, the center turning lane is designated for left turns only and should not be used for through traffic or passing. Drivers may enter the center turning lane to prepare for a left turn or to make a U-turn, but they must do so safely and only when it is clear. It's illegal to use the center turning lane for more than 200 feet before making a turn. Additionally, drivers must yield to oncoming traffic and pedestrians when using this lane.
Right Lane
That depends on which side of the road you are driving. Some countries drive on the opposite side of the road to the country in which you live and as you have not made it clear which country you live in we can not answer your question.
Use the position of your vehicle to communicate your intentions to change lanes. Position the vehicle in the right side of your lane before turning right and move toward the center line when you are about to turn left.
in the center lane
The center turn lane is for turning left only. It is NOT used for passing, merging, making right turns, or for traveling more than 50 feet before turning left. It was primarily designed to get out of the traveling lane when making a left turn consequently, not stopping traffic. Some states it is unlawful to pass a car, that is on the right, when you are in the center lane.
It varies state by state. The information for your state should be located in an online handbook on your state's DMV website. In California, you may drive in the two-way turn lane for 200 feet.