Tim, At the MAST site there is one 27 day photometry measurement for RX And in the TESS data. this record suggests there may be a period of 0.21 days. However there seems to be a lot of short term variation that makes pulling out the 0.21 period really difficult.
type in “rx and” into the “and enter target” box and hit RETURN. Click on the uppermost “Timeseries Viewer” icon in the second row down. Up pops the photometry record which you can zoom into.