Hi Mussadar,
there is a variety of sources. Here are some examples.
Help: if you search for Machine Learning on our Help pages it takes you to some articles and Tutorial Videos: https://help.pyramidanalytics.com/Content/Root/MainClient/apps/Model/Model%20Pro/Data%20Flow/ML/Machine%20Learning%20Overview.htm?Highlight=machine%20learning 
Learning Live: we cover a broad spectrum of topics in the Best Practices/Learning Live Archives. Here is one example
https://community.pyramidanalytics.com/t/m1ha33a/learning-live-custom-machine-learning-with-learnpredict-scripts

We also cover ML in the Model Advances course: https://learn.pyramidanalytics.com/courses/model-advanced/

Please let me know if this covers your need, or if you have any specific questions.
Christian

Hi MUDASSAR SHAIKH,

what I also found helpful as a start was doing this course https://learn.pyramidanalytics.com/courses/predictive-modeling-logistic-regression/.

https://help.pyramidanalytics.com/2020.10/content/root/MainClient/apps/Model/Data%20Flow/R%20Scripting%20Examples.htm was also helpful for me regarding the input and output parameter.

Hope that helps a bit!
Lara