How to pass parameters to selenium and running it from script routine in TestComplete?

I don't believe you can.  TestComplete's execution of Selenium tests utilizes the Unit Testing capabilities of TestComplete which does not take parameters.

Read the following and all associated topics.

https://support.smartbear.com/testcomplete/docs/working-with/integration/selenium/index.html

Hi,

As a possible workaround: write parameters to the file from TestComplete test code and read and process them from Selenium.