The beard shall be washed with face while performing wudhu. While washing face three times one would wash the beard three times along with it. If the beard is thick then it is enough to wash it from above. It is not necessary to enter water into it. If the beard is thin and the skin of the face is visible then it is fardh to wash till the roots. It is sunnah in case the beard is thick to do khilal (pass wet fingers) by inserting the fingers in the beard.
Allah (Subhana Wa Ta’ala) knows Best
Darul Uloom Deoband