There's no way to display what listPoints (or any of the other list* variables) consists of, because it's all within the formula context and the output of the formula is a single value. But you can access a single value of a list variable by using bracket notation: listPoints[0] for the first item or listPoints[1] for the second, etc. The formula dialog will complain if you try to access a value beyond the size of the variable. For example, if listPoints has a value of "12 15 23" (a total of 3 values) and your formula has "listPoints[3]", it will error since index 3 would be the 4th entry.

Theoretically renaming your tournaments could yield the variables in the proper order, but it would be hard to make this generic - it might have to be specific to your tournaments (which is all you care about). But it seems iffy no matter how you approach it.

While you can access the list variables contents using a single index, getting a range of values out will prove more difficult. There are no dot notation range operators, like "listPoints(1..5)", which presumably would return a new list of points at indexes 1, 2, 3, 4, and 5. JS uses .slice and .splice methods, which aren't exposed in TD formulas.