When, for example you can't spell a word. How do you look up the correct spilling?

(1) word. How
(2) word, how
(3) word how
(4) word; how
(5) word or how

I pick # 2 is this right

Yes, 2.

When you can't spell a word and need to look up the correct spelling, there are a few ways you can go about it:

1. Use a Dictionary: One of the most common and effective methods is to use a dictionary. You can either use a traditional printed dictionary or an online dictionary, such as Merriam-Webster or Oxford English Dictionary. Look up the word by starting with the most likely spelling and then check if it appears in the dictionary. If it doesn't, try alternative spellings until you find the correct one.

2. Search Engines: Another option is to use search engines like Google or Bing. Type in the word you are trying to spell, and the search engine will often suggest the correct spelling or offer a "Did you mean" feature with alternative spellings. Make sure to double-check the provided spelling to ensure its accuracy.

3. Spell-check Tools: Many writing applications, including word processors, email clients, and web browsers, have built-in spell-check tools. Type the word in a document or text field and look for red squiggly lines under the misspelled word. Right-click on the underlined word, and the spell-check tool will usually offer suggestions for correct spellings.

Regarding your example, option #2, "word, how," would not be the recommended way to search for the correct spelling. Commas typically do not play a role in searching for correct spellings and are not necessary for finding the correct word spelling. It would be more appropriate to choose option #3, "word how," as it does not introduce unnecessary punctuation.