PRP

PRP is the abbreviation for Producer Rating Point. As of 11 October 2017 it is the sum of 10 highest PRPs from individual regular songs, plus the player's three highest PRPs from Smart Live songs. For each individual song, the PRP is the highest score divided by 10,000, rounded down (for example, if you score 448,000 on Onegai! Cinderella, your PRP value for that song is 44). Your PRP is shown on your profile.

your PRP page

Reaching 1000 PRP is one of the conditions for unlocking eligibility for SSS Rank.

Rewards

The rewards are claimed as part of Missions.

PRP	Reward
50	Star Jewels x 100
100	Star Jewels x 100 and Message
200	Star Jewels x 100
300	Star Jewels x 100
400	Star Jewels x 100
500	Title: 「腕利き」
600	Star Jewels x 100
700	Title 「実力派」
800	Star Jewels x 100
900	Star Jewels x 100