Count and Rank Please

hello Sudhakar510 
i created a sample data

the uncessary column is just an added column so the allexcept later on works, because i would assume you have more than those 2 columns 

for table A with only values,use :

Count of Items alone = CALCULATE(COUNT(Help[Value]),ALLEXCEPT(Help,Help[Value]))

and for ranking

table 1 rank = 
VAR __currentvalue = MAX(Help[Value])
VAR __tmpTable = ALL(Help)
VAR __tmpTable1 = SUMMARIZE(__tmpTable,Help[Value],"__Count",[Count of Items alone])
VAR __tmpTable2 = ADDCOLUMNS(__tmpTable1,"__Rank",RANKX(__tmpTable1,[__Count],,DESC,Dense))
RETURN MAXX(FILTER(__tmpTable2,Help[Value]=__currentvalue),[__Rank])

now for table B:

count of item per id = CALCULATE(COUNT(Help[Value]),ALLEXCEPT(Help,Help[ID],Help[Value]))

but if you only have those 2 columns , id and value, use

count of item per id = CALCULATE(COUNT(Help[Value]))

for ranking:

table 2 rank = 
VAR __currentid = MAX(Help[ID])
VAR __currentvalue = MAX(Help[Value])
VAR __tmpTable = ALL(Help)
VAR __tmpTable1 = SUMMARIZE(__tmpTable,Help[Value],Help[ID],"__Count",[count of item per id])
VAR __tmpTable2 = ADDCOLUMNS(__tmpTable1,"__Rank",RANKX(__tmpTable1,[__Count],,DESC,Dense))
RETURN MAXX(FILTER(__tmpTable2,AND(Help[Value]=__currentvalue,Help[ID] = __currentid)),[__Rank])

if i solved you problem, a kudos is well appreciated as well as mark it as solved