How many letters does the top answer for “help in a difficult situation” have?

The most common answer is succor (6 letters).

Crossword clue: help in a difficult situation

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

succor 6 letters wn-def

assistance in time of difficulty

succour 7 letters wn-def

assistance in time of difficulty

informal terms for a difficult situation 50% similar → fix