Cleat holes "covers" for Shimano shoes
Based on comments, you want to seal the holes in the sole which are used to mount cleats.


Put cleats on.
Put the cleat bolts in the holes, but be careful they're not too long when there's no cleat acting as a washer.
Put some RTV Silicon sealant up the hole - should be possible to dig this out with a sharp screwdriver or drill later.
Short term fix is to slap a square of duct tape over the holes.  Should last for a bit because the shoe sole doesn't touch the ground where the cleat is.


Another option is to wear shoes without cleat holes.