I Created Custom State Machine Workflow in that workflow having Infopath Custom Form Module so we are going to deploy in production server. This Application access number end users in that time we need any Infopath License Please help............
Infopath is part of Microsoft Office that is commercial product and generally not free. Though, the cost of license has nothing to do with the need of having licenses for software usage, be they free or not, in Sharepoint module or not.
Once more, the licensing depends on how you usу Infopath forms with Sharepoint:
Anyway, with enterprise, standard Sharepoint server or "free" Sharepoint Foundation, with client Infopath or through IPFS, one cannot avoid purchasing Microsoft licenses since it is hooked to using Windows operating system on every client machine. Additional options with Sharepoint and Infopath depend.
Your question is impossible to answer without knowing your details or requirements