Hello Waleed,
To extract the numbers after the text "مرجع العملية", you can use a combination of TEXTBEFORE, and TEXTAFTER functions.
=TEXTBEFORE(TEXTAFTER(A1, "مرجع العملية"), " ")
TEXTAFTER(A1, "مرجع العملية"): Extracts the text after "مرجع العملية".
TEXTBEFORE(..., " "): Extracts the text...