For a Pokemon Sword/Shield competitive Golisipod set, I need help with an item for it. Wacan Berry is good for tanking all electric type attacks. And Cell Battery can't handle special electric attacks well, but makes Golisipod stronger.
Note that I have Bulk Up on Golisipod, so I would lean toward Wacan Berry, but if I'm wrong, let me know.
You didn't tell us the format, so I'll answer for all the SS formats where Golisopod is viable. Note that cell batteries are usually useless in all formats because it's very situational. It's especially bad on Golisopod because Golisopod's special attack stat is low and useless regardless of what item it's holding.
UU: Use heavy-duty boots so you can freely switch out of electric attacks and turn on computers :P, or use Sitrus berry to heal any kind of damage
Monotype (bug): Use assault assault vest to weaken special attacks or Sitrus berry to heal any kind of damage
Almost Any Ability: Use leftovers to heal from any kind of damage
Balanced Hackmons: Use heavy-duty boots to freely switch out of electric attacks, or toxic orb (and poison heal) to heal any kind of damage