You want to count everytime he saved someone?
Fine
He saved luffy from drowning at arlong park
He saved luffy and nami from an avalanche at drum island
He saved the crew from crocodile at alabasta
He saved usopp and nami from ener at skypia
He destroyed ener's ship which allowed luffy to fight ener
He tracked down Robin and infiltrated the sea train at water 7
He saved usopp from jabra at ennies lobby
He closed the gates of justice which allowed the crew to escape ennies lobby
His shadow protected usopp and nami at thriller bark
He saved Nami from absalom
He protected luffy from the kraken's tentacules
He saved tashigi and the g5 from vergo and lead them to safety and is the reason why the g5 helped the strawhats
He saved kinemon in punk hazard which in turn lead to all the events in zou and wano
He turned viola into an ally that helped the crew
He saved the crew from doflamingo
He saved the crew and zeff from bege and big mom
He saved luffy from starvation
He saved his family which in turn saved the crew
He saved Nami in wci
He saved the crew from big mom with the wedding cake
He saved the sunny from daifuku
He saved everyone from a whirlpool at wano
He saved Nami, Robin and Shinobu from Hawkins
He saved Momonosuke from king which indirectly saved the alliance
He saved chopper from queen
And there's probably a lot that I missed