tell how you can earn money through project that i will upload and how much is it in that i have some project i want to get money ou of it

Step 1: Don't upload the entire project here. Anything you upload here is free to the world. Maybe upload a few parts or assemblies as samples from the project.

Step 2: Make sure your project is something people actually want and are willing to pay money for. More importantly, make sure it's something that someone can't just look at and design for themselves. Why would I pay if I can just redraw it for myself?

Step 3: Find a site or service (or build your own) that you can charge for your work, or get paid by the site/service.

Step 4: Charge a reasonable price so that people aren't tempted to go seek pirated versions of your work, or just make it for themselves.

Step 5: Advertise your work and/or abilities to solicit future business.

Step 6: Don't get lazy or complacent. Money isn't going to just role in. You need to actively work to keep people's interest.

Hope this helps.