For sure. I think we're saying the same thing. I'm suggesting you add another counter variable, in addition to the score variable, which adds one to the player every time it hits 10, (then resets to 0). You can add 1 to the variable in the same event you use to add one to your score overall. This way you have a total score and can get your mechanic in.
Another option could be if score/10 = round(score/10) -> once while true -> add 1 to player health