There is no hard & fast number. A 1470 puts you (barely) inside the middle 50% of accepted students at Princeton (the bottom 25% of accepted students scored less than 1440). So, you can get into Princeton with the score you have- and lower. Will you? probably not. Will you with a 1530 or a 1550? probably not. That’s a safe guess, simply because it has single digit acceptance rate and a lot of super candidates.
What will decide whether you are one of the people who gets in with a low-end SAT
will come down to your essays, LoRs, ECs, etc. With no idea what you consider ‘pretty good’ in an EC, or whether your ‘hook’ really is one or not nobody can. give you any reassurance at all- and with them the most anybody can say is that you are a credible candidate.
What we can say for sure is that if a college recommends subject tests you are at a disadvantage if you don’t supply them, and if a college requires them (& you don’t have a waiver) that’s an own goal.