This guide will provide you with all the useful information about New Battle Pass in pokemon go.
First of all, you have to go into the shop where you’ll find the free battle pass. You need to select Exchange and then some of the research will be unlocked related to Stardust in your research section.
You need to go to the research section and you will find all those related tasks. As soon as you complete those tasks, your stardust amount will increase too.