Here is some part of my blood (cbc) report , i'm 26 years old (man, single) please tell me some tips : rbc 6.7 hct 50 mcv 74.6 mch 24.8 rdw - cv 15.7?

You're not numbers: The only "tip" I can share is that lab values mean nothing in isolation. With your unusually low MCV, the concern is one of the thalassemia minor variants -- usually a non-problem but something you and any possible present or future wife need to know about. A relatively but not dangerous Hct might be addressed. Basically, in any society you have a duty to have your physician explain particulars.