If you are using a list view, or a data grid, there are already pre-defined sort tabs, there you can sort the data in ascending order based on the points it have.
Hope it helps!
You can use the list operation :
and here you can add the sort , you need to pass the list to the page after that, and the sort stays as it is in the microflow.
Is your points Attribute Integer ?
If yes , then if you are retrieving the list from Database you have the sorting section where you can add the Sort constraint on your point Attribute,
If you are Retrieving the list via association you can use list operation activity as feras kamel mentioned.