1. Do you have insurance?
2. How old is your oldest bar of soap? A year old, less than 6 months?
I ask #1, because what if someone has an allergic reaction to your soap & decides to sue you? It happens more than you realise. Even if you know you're not in the wrong, you'll have to appear in court with an attorney & that costs. Might as well have the insurance company's attorney deal with it. They know what they're doing.
Some craft fairs require you have insurance, or they charge you an extra fee so you're covered at the fair. I'm in one this summer that requires insurance. It was an extra $25 without it. It's a HUGE event, & one I didn't want to miss.
I ask #2, because if your soap isn't older than 6 months, you have no idea what it's going to be like in 8 months or a year from now. Some people buy soap as gifts, they wait for the giving (maybe months,) then the recipient says, "Oh how pretty!" & sits the soap in a dish not to be used, but to be looked at for several months, or puts it into a drawer & forgets about it for 6 months. Do you know what your soap will be like? Will it develop DOS or go rancid?
To sell in most states, you have to charge sales tax, so you'll need a tax ID. You need to check with your state, county & city to see if you need any permits or licenses.
I encourage soapers who want to sell to register as an LLC or Corp, so if you get sued, they can't touch your personal property.
Do you have & can you use accounting software? You need to keep track of customers, orders, supplies, sales tax, etc. It's just easier to have it all in one place.
You might want to throw in working on a business plan in there someplace. LOL
OK, but first what do you consider as "saleable bars of soap"? You've been soaping one month? How old is the soap? If it's only one month old, & you've only been soaping one month, tell me what that soap's going to be like in 6 months, 12 month or more.