There are a myriad of reasons you may not be getting read, but most important, make sure your script is discoverable so it can be searchable. To do so, go to My Account and click on the Privacy tab, or click on the Private button on the project page.
It is also most helpful to completely fill out your profile, provide concise loglines for your projects, and correctly label the genre/format. Many of our industry partners search for keywords in the title and logline.
You can also make sure to list your production status as Spec to let industry partners know you're looking to sell your script. You can do this by going to Update Project and changing your production status.