If the cut is closed and scabbed, then no, there is no opening from the outside of your body to the inside / your blood stream.
However, if your concern is infection, there is a small chance that bacteria trapped inside the cut could make its way into your blood stream. If your cleaned it after it happened, it is not red, swollen, warm, painful, or draining , and appears to be healing you will most likely do just fine.
Is there something specific that you are concerned about?
The question I commented under bobdylan1958s comment
Can someone answer that for me!
Hi scratches can be painful so long as you keep area clean it will heal , no it won't touch the bloodstream , take care ,