Every rank in the Profit Ladder Event will give you rewards! The highest ranks reward BOOSTERS. There are 3 different booster types and each BOOSTER has different levels. The level of each BOOSTER is located in the middle of the BOOSTER icon. When a BOOSTER says 3X, it means that BOOSTER will improve your gameplay by three times. For example, one Swift Fixer 3X BOOSTER will speed up your renovation by three times.
If you win multiples of one type and level of BOOSTER, there will be an indicator on the top right hand corner of the BOOSTER card. For example, if you have two Grease Lightning 3X BOOSTERS, the top right hand corner will say "x2".
*Pro-tip: Higher ranks in the Profit Ladder Event will win higher level BOOSTERS (and larger amounts of HEARTS!).