Depends on the bat, something like TON bat with of stickers you can get anywhere between 0.5-1 ounce saving. Toe guard is usually 0.2 -0.3 ounce. Removing binding and replacing with tape also depends on the binding originally used, but it could save 0.2 oz maybe or thereabouts as tape adds back some weight.
I would personally not prefer to remove binding, but I have removed the stickers and toe guard in past and believe me, it does make a difference to pickup despite the small weights. Just removing the toe guard on one of my bats which saved only 0.2 oz weight made the pickup much better.