Hi Deadly48
Welcome to the Board!
It depends on how you write the Formula Is expression within the Conditional Formatting. For example:
Type a 1 into cell A1, now highlight the entire row (ie select it). Then go Format> Conditional Formatting, change to Formula Is and type:
$A1=1
and set the format you want.
If you return to Excel, you should see the entire row is now formatted as you specified.
Best regards
Richard