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Hi Morgan. I am an Excel user like you.
I'm afraid that this may be a somewhat vague answer because the details in your question are very vague. I started with this trial setup that is what I picture from your description.
To format entire rows based on the data 1 or 0 in Column C, highlight all of the cells in all columns that you want to be formatted if they meet the condition. Then enter this formula in the Home ribbon>Conditional Formatting> New Rule>Use a Formula window.
=$C2=1
The Row 2 reference in C2 should match the first row of your selected cells. If you start the selection on a different row, make the formula match your first row. Adjust the column reference to match your data. Note that it is the $ sign before the column letter that allows the Conditional Formatting to be applied to all cells across the row while referring to the same cell to be evaluated in every column. Without it Excel adjusts that reference as you move across the row changing the cell that is being evaluated for every column.
Then set the formatting you want by clicking the format button at the lower right and then OK and OK.
HOWEVER, if you are only using the 1 and 0 to determine the Conditional Formatting and don't actually need that data in your spreadsheet, it would be better to just use your IF statement in the Conditional Formatting window. Again, note the $ sign to allow the rule to be applied all the way across the row.
=IF($B2<200,1,0)
As I said above, I'm just guessing at the possible layout of your data. If this is not close enough to help solve your issue, reply with more information including the formulas you are using and a screenshot of your layout (sensitive information removed).