What are the possibility for single women living in Ghana..........

I don't really understand your question. Possibility for what? If you are concerned about safety then Ghana is a relatively safe country. If you are concerned about finding work here then you need to consider your qualifications and work experience and apply for a job based on them. If you want to create your own business then you will need to consider the conditions for foreigners wanting to set up a business. There are a lot of possibilities here but Ghana is an expensive country so you will find it easier to settle if you are financially secure as it will take time for you to establish yourself unless you have secured an expat position