Without more details ragarding the information, you should start looking into
worksheet functions:
VLOOKUP() [or possibly even HLOOKUP()]
SUMIF()
and if data is to be gathered based on multiple criteria on a single row on
any given sheet, then SUMPRODUCT() [for pre-2007 Excel] or SUMIFS() [Excel
2007 unique].
You may have to build up formulas that the summary results from one sheet to
that of others.
Might even search Excel Help for the phrase
Refer to the same cell or range on multiple sheets
which may lead to information you can use.