hi i run a business which requires me to fill pdf forms can i get a application which can help me fill the forms by typing the details

You can use the "Add Text Comment" tool (formerly called the Typewriter tool). Document Geek: Acrobat Typewriter Tool: Just Embrace it! The article is from Acrobat 9, but it works the same in later versions. They just changed the name of the tool. Now it is called the Add Text Comment tool.

Adobe Reader (now called Acrobat Reader) can be used to fill-in and save PDF forms. Adobe Acrobat can as well, but it's not free like Reader is. If you find that you need to do more than Reader is capable of, then use Acrobat.