You’re automatically included as a GrabRewards member so long as you have made a Grab transaction. There are 4 member tiers (Member, Silver, Gold and Platinum), which you will achieve once you accumulate the number of points needed for each tier. Depending on your tier status, you will be entitled to a host of exclusive benefits.
Your benefits may include discounts, priority services and partner exclusives. You can refer to this
table for the number of GrabRewards points needed to reach the next member tier, as well as your benefits.