how to create a informatioin retrieval model im out off resources and having short time
You can refer the short course section, there are few courses on how to create retrieval model and rag application.
I am not sure which course, but courses like Embedding Model : from architecture to implementation or Advanced retrieval for AI with Chroma should be some of the good courses to start understanding of the same. there are other courses too which explains all the steps to retrieve data from image to text to embedding but I hope you have completed Natural Language Processing Specialisation.
Regards
DP