Are there any sources for tabulated Rf-values, especially 1-phenylazo-2-naphthol?
Did you react aniline (or its hydrochloride) with sodium nitrite in the presence of 2-naphthol?
I'm afraid there will not be any table with $R_\mathrm{f}$ values.
These values are not only dependent on the compounds and the mobile phases, but also on the stationary phase: e.g. silica, aluminium oxide, etc.
Your best option is to use reference samples and measure the $R_\mathrm{f}$ value yourself for the conditions you want to apply or transfer from TLC to column chromatography.
My suggestion is to collect the crude reaction product (Büchner funnel, etc.) dry it, note the yield and measure the melting point.
For purification, recrystallize from ethanol. You should receive red needles with a melting point of $\pu{134 ^\circ C}$.
NOTE: Wear proper protection when handling the azo dye, which is a cancer suspect.

References:

IOC-Praktikum (PDF in German)
GESTIS-database on hazardous substances