I want to generate sales leads for my website

Hi, I am a Chartered Accountant and would like to generate simple sales leads inside my website landing page where people can fill the details in a form and I can get connected with them.

1. Please let me know your fee for doing this ?
2. How much time will it take ?
3. What will be cost of Google ads for this work ?
4. Will you be designing landing page in engaging way so that people post thier job