Insurance and License Questions

[BBallkid42]

Curious as to how much I should expect to pay for insurance? Right now I am a solo operation with the help of someone every now and then but 99% of time it is just me. Also got some questions on how to become a legal business. Obviously I will have to register my company and acquire a business license but what else would I need to get and how much cost am I looking at. And as far as taxes go, will the 6% sales tax I add on cover all the state and federal taxes I have to pay or will I have to increase my price as well to cover new taxes? Please don't think I have been a low-baller not paying insurance because I am looking into now so please no hate responses. I know there are a lot of questions but please help answer as much or as little as you can. Thanks