The first half of the dubbed Sailor Moon Stars will be released on June 18, 2019 to Blu-ray and DVD but now you can also buy it on Amazon Prime Video. Although Prime Video is included with your Amazon Prime Membership you will have to buy individual episodes or season of Sailor Moon Stars. Single episodes cost $2.99 and the 17 episodes cost $39.99. You can purchase it by visiting this link https://www.amazon.com/gp/video/detail/B07SLKTPJT. Please note this is only available in the United States.
If you would like to catch up on Sailor Moon you can visit https://SailorMoonTV.com.