You can create a stored procedure that accepts username, password, etc..

Then in another column of your excel file using concatenate function create the sql statement for each on

somethin Like =CONCATENATE("EXEC usp_CreateLogin @username='",A2,"', @Password = '",B2,"' … ")

Then copy the cell and paste it all the way down until a statement per username is created, after that copy the whole column and paste it in the SQL Management Studio

This should create all the users