Do you submit scores if you are slightly below middle 50% range at a school or go test optional? - #26 by Data10 suggests that those academically rated 3 (typical applicant) had a 18% admit rate during the lawsuit period if they were LDC, but <1% if they were non-ALDC and non-URM. Those rated academically rated 4 or 5 (below average applicant) had only a 3% admit rate if they were LDC, essentially 0% for any other non-athlete hook (or lack thereof) situation.
Page 19 of https://www.harvard.edu/admissionscase/wp-content/uploads/sites/6/2021/06/2019-10-30_dkt_672_findings_of_fact_and_conclusions_of_law.pdf describes what the academic ratings of 1 to 5 mean. It seems unlikely that a 3.7 HS GPA will result in a rating of 1 or 2, despite the SAT score that may fall into the 2 description. If you apply and they rate you as a 3 for academics, you would have a non-trivial chance of admission as a legacy, but still much more likely to be rejected than admitted (though if you are unhooked, you would essentially have no chance in that situation).