I have a red and off white coming from the celing and on the fan is white,blue,blk green on mounting bracket also green how do I connect the green? And does blk and blu go on red wire

If the old light fixture was connected to the red and white, the fan black and blue can connect to the red, and white to white.
Any greens or bare wires should all connect together, if you have a metal box and no green or bare connect the green to the box.