To reset your stats on Blox Fruits, first, locate NPC Polkster. You can find Polkster on the bridge between the Green Zone and the Kingdom of Rose in the Second Sea.
Next, engage in a conversation with Polkster. He offers to reset your stat points.
This service costs 2500 fragments, so ensure you have enough fragments before you proceed.
After paying, your stat points will be unassigned. You can then reallocate them according to your desired build.
This method allows you to reset your stats without spending Robux, making it a cost-effective option.