That is highly dependent on your current situation. If you already have API access to the exchange of your choice, the setup of your PowerBot instances will take a few days. If not, the setup time is mainly limited by the exchange providing you with proper credentials.
There are a few other things that factor into the time-to-market: If you intend on using one of PowerBot’s standard algorithms, the correct configuration for your situation and interface testing needs time. If you want to build your own strategies, you need to design and implement them, and your trading algorithm needs to be well tested before going into production.