Hi @WildfireSnow
Here is a formula to sum the two switch statements

SUM(SWITCH(
{Is there leaves, needles or other vegetation on roofs, gutters, decks, porches, stairways, etc.},
'Yes','0',
'No','4',
'NA','4',
''
)+SWITCH(
{Is there any dead and dying trees, branches and shrubs or other plants adjacent to or overhanging buildings?},
'Yes','0',
'No', '4',
'NA', '4',
''
))

When building out complex formulas it is easier to break it down into a formula for each item, and then combine into one formula once you have your desired result.

If this case I make only the first switch statement. then another formula with the second switch, then a final formula where I sum the two previous formulas. Once that works copy the formula from the first one and replace the reference name in the final formula, repeat. Then you can delete the unnecessary formulas