Hi @DevadathanK ,
Do you want to get the weeks in current month?
I think you do not need to manually create a list with 52/53 columns, you just need to use some formulas to calculate in powerapps directly.
Could you tell me what is your week's start day? Based on the data that you provided, I think it is Sunday.
I use Sunday as the start day below.
The issue that he posted is very good @eka24 .
Many solutions there could help you a lot to calculate about week.
By referring this, I figure out the solution to get the week list that you want:
1)set the Screen's OnVisible:
ClearCollect(a,[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,.....,52,53]);
ClearCollect(b,AddColumns(a,"weeknum",Concatenate("Week ",Text(Value))));
//b is a collection with all the week num value
Set(startweek,If(RoundDown((Date(Year(Today()),Month(Today()),1)- Date(Year(Today()), 1, 1) + (Weekday(Date(Year(Today()), 1, 1) - 1, Sunday))) / 7, 0) = 0,52,RoundDown((Date(Year(Today()),Month(Today()),1) - Date(Year(Today()), 1, 1) + (Weekday(Date(Year(Today()), 1, 1) - 1, Sunday))) / 7, 0))+1);
Set(endweek,If(RoundDown((DateAdd(Date(Year(Today()),Month(Today()),1),DateDiff(Date(Year(Today()),Month(Today()),1),Date(Year(Today()),Month(Today())+1,1))-1)- Date(Year(Today()), 1, 1) + (Weekday(Date(Year(Today()), 1, 1) - 1, Sunday))) / 7, 0) = 0,52,RoundDown((DateAdd(Date(Year(Today()),Month(Today()),1),DateDiff(Date(Year(Today()),Month(Today()),1),Date(Year(Today()),Month(Today())+1,1))-1) - Date(Year(Today()), 1, 1) + (Weekday(Date(Year(Today()), 1, 1) - 1, Sunday))) / 7, 0))+1 )
//the variable startweek is current month's start week
the variable endweek is current month's end week
2) insert a list box to display the week list that you want
set the list box's Items:
Filter(b,Value>=startweek,Value<=endweek)
set the list box's Value:
weeknum
Then the list box will display the value that you want:

Now, let me explain about the formulas that I use to calculate week.
1)How to calculate today's week:
If(RoundDown((Today()- Date(Year(Today()), 1, 1) + (Weekday(Date(Year(Today()), 1, 1) - 1, Sunday))) / 7, 0) = 0,52,RoundDown((Today() - Date(Year(Today()), 1, 1) + (Weekday(Date(Year(Today()), 1, 1) - 1, Sunday))) / 7, 0))+1
If you use other day as startday, replace Sunday in my formula.
2)How to get the first day in current month:
Date(Year(Today()),Month(Today()),1)
3)How to get the last day in current month:
DateAdd(Date(Year(Today()),Month(Today()),1),DateDiff(Date(Year(Today()),Month(Today()),1),Date(Year(Today()),Month(Today())+1,1))-1)
Based on the first formula, if you want to get the first week in current month, you just need to replace Today() with the second formula.
If you want to get the last week in current month, you just need to replace Today() with the third formula.
Best regards,