For me personally:
qvaultBIO: 15 17 17 16 18 17 18 19 17 18
Bio DAT: 22
However, I really wasn't taking any practice test seriously and was always using practice tests to accumulate material more than just testing myself. I wouldn't just try to retain the questions I got wrong, I'd go back to the chapter and add more info to my notes. I took those practice tests 1 month before my exam.