granpa I don't really understand modulos. However, I've found another way that answered my question, but takes a few more steps:
Alongside my 'score' global variable, I added another global variable named 'score_10th'. Each incremental point earned through the game will be added to both variables. Once both variables reach 10, there's a trigger that resets the 'score_10th' variable to 0 and creates an object; the 'score' continues to accumulate points unaffected. When the 'score' reaches 20, the 'score_10th' reaches 10, which will reset to 0 again. So, the 'score' will continue to accumulate separately from the 'score_10th'.