Dear Mohamed Ismail,

Kindly see the attachment for your question.

If you are using a statistics program like SPSS you can compute different kinds of factors scores (this in an option within the factor-command). Additionally you can find an overview in DiStefano, C., Zhu, M. & Mindril, D. (2009). Understanding and Using Factor Scores:Considerations for the Applied Researcher. Practical Assessment, Research & Evaluation, Vol 14, No 20 (online available).

Dear Mohamed Ismail,

Kindly see the attachment for your question.

There are number of methods to estimate factor scores. Pl see the link.

https://www.researchgate.net/publication/258239582_A_note_on_the_Factor_Analysis_in_Forestry_Sciences?ev=prf_pub

Chapter A note on the Factor Analysis in Forestry Sciences