Using potassium hydroxide means that you have made soap paste. Search the forum and read the liquid soap threads, you'll be able to dilute your paste and use it as liquid soap. Depending on the oils and SF you used, you may have some results (cloudiness, oily residue) in your soap that the liquid soap afficiandos wouldn't desire, but it should work just fine for personal use. There's several really nice recipes here for liquid soap, give them a try with the rest of your potassium hydroxide.
If you make a soap recipe with a combination of potassium and sodium hydroxides, it yields the half brother of liquid soap: cream soap. You can also search the forum for how to make that.
Is your recipe based on using NaOH? And then you grabbed the KOH container and weighed out KOH instead? If so, your superfat is super high -- to the point it's really not going to be usable as soap.
You have to use 140 grams of KOH to get the same saponification "power" that 100 grams of NaOH provides.
If this is the case, then you either need to discard the batch OR you need to add enough extra KOH to saponify the excess fat. As BattleGnome suggested, you can post your recipe and we can help with the math, if you'd like.
As far as what to do with the KOH ... The correct way to safely discard a small amount of alkali (KOH or NaOH) is to rinse it down the drain with plenty of cold water. Discarding a large amount of alkali down the sewer can be hard on your plumbing and (if you have one) your septic system.
Do NOT discard KOH or NaOH in your household trash -- it could cause a horrific accident.
It makes more sense to use KOH for soap making. You could make more liquid soap or start making shave soap. Or find a soaper who wants to make liquid soap or shave soap and give your KOH to them.