I've heard 90 day reviews are gone/will be going away soon, but in the past:
Leaders completed a review form which rated performance on meeting core roles, embracing team culture, driving positive guest experience, etc. These would follow the typical Target ratings of Inconsistently Effective, Effective, Excellent, and so on. Assuming you didn't get a copy-and-paste review from a lazy individual, each topic would have specific feedback on why you received the rating, what you're doing right, and what you can improve on. If the leader is comfortable with you (and as a leader) they'll actually 'deliver' a review. If they're not, they'll just hide behind the paper and read it word for word.
I received a copy/paste 90 day as a TM (nothing but generic feedback, a considerable amount that didn't apply to me, and even the wrong TM names) and that feeling really stuck with me even after promoting to TL. Since then, I've made reviews meaningful for the TM and use it as a chance to highlight what they've accomplished in 90 days and discuss what to improve on (with realistic expectations). I give them a chance to ask any questions after reviewing each 'topic' with them in case something wasn't clear. Assuming your leader has worked along side and communicated with you over the 90 day period, nothing should come as a surprise in the review.
Employee retention is bad enough in retail. People shouldn't be shot down by lazy reviews.