What a 1500 actually demands
A 1500 splits, roughly, into two section scores near or at the top of the 200 to 800 range. That level of section score requires missing very few questions, since each wrong answer near the top of the scale tends to cost more scaled points than a wrong answer in the middle of the range. There is no way around this with strategy alone. It requires being consistently, mechanically accurate.
College Board does not publish a fixed conversion table from raw score to scaled score, because every test form is equated slightly differently. That means no one, including us, can tell you the exact number of questions you can afford to miss on a specific test date and still land at 1500. Treat any specific number you see for this as an estimate, not a guarantee.
The harder module is not optional at this level
The digital SAT routes you into an easier or harder second module based on your performance on the first module, separately for Reading and Writing and for Math. The harder second module is what opens the top of the score range for that section. If you route into the easier module, there is a ceiling on the highest score that section can produce, regardless of how well you do on it.
This means the first module on each section matters more than its question count suggests. A 1500 requires performing well enough on Module 1, on both sections, to be routed into the harder Module 2, and then performing at a very high level on that harder module as well.
What near-perfect accuracy looks like per section
Reading and Writing has 54 scored and unscored questions combined across two 32 minute modules of 27 each, with 2 unscored pretest questions per module. Math has 44 questions across two 35 minute modules of 22 each, also with 2 unscored pretest questions per module. Reaching a 1500 means the number of questions you can afford to get wrong on the questions that do count is small, on both sections, not just one.
Because you cannot identify which questions are the unscored pretest items, the only workable approach is to treat every question on the screen as if it counts. Trying to guess which ones are unscored and coasting on them is a way to lose points you did not need to lose.
What actually closes the gap to 1500
At this level, broad content review usually is not the bottleneck. The gap is almost always a specific, repeatable list of skills or question types where accuracy drops under time pressure. Finding that list requires reviewing every missed question from full length practice tests and asking specifically what went wrong: a misread question, a careless algebra step, a vocabulary gap, a timing problem, or a genuine content gap.
Timing has to be solved separately from content. A student who knows the material but runs out of time on Module 2 of Math needs a different fix, faster problem recognition and less rework, than a student who has time left over but is making conceptual errors.
Being honest about what this takes
There is no shortcut, and no realistic timeline we can hand you without knowing your starting point, since the distance from a strong score to a 1500 is not linear. The last points are the hardest to get precisely because they require eliminating almost every category of mistake, not just the most common one.
Full length official practice tests in Bluebook are the only way to simulate the actual routing and timing. Between those, skill level drilling on the specific things you are missing is what moves the number. StudyPebble offers free daily practice organized by skill with an explanation on every miss, which is useful for isolating exactly where the remaining points are going, alongside full length practice rather than instead of it.