MDBT42Q,2v04 run a scan every second and save wanted resault

if I power it using the MDBT42Q (3.3V) meaning the the data ill also work on 3.3V (this is what I know - is this ture? am I correct?

Yes.

if the above is true . will you still recomand to use the pullups?

Only on the CS pin - which stops the SD card getting potentially corrupted if there's electrical noise.

I found in the SD datasheet , that the operation is 3.3V\10uA - do you know if this really the value of the Amper?

I don't know. The best way is to measure it for sure when it is working. 10uA is pretty low though.