In the state of Alabama, do you have to have a license and a written contract to do a small job less than $5000.00

Did a concrete/brick porch for @ $3500. I was never paid for the job. The job was perfect, except or the cleaning of the brick. I did not do that bc I was informed I was not getting paid. Ralso kept all left over brick. Was not paid for labor or any materials. I took him to court and I won. He is now counter suing with an attorney.