If you mean the year, it's 'seventeen oh seven'.

There's more than one way. "Seventeen oh seven" is probably the way I would read it, and probably more modern. "Seventeen hundred and seven" is also correct, but perhaps more formal or old-fashioned.

One thousand seven hundred and seven if it's for something like money Seventeen oh seven for dates or addresses One seven oh seven for phone number

For a date, always seventeen o seven. For a number, either as Dan has written, or, one thousand, seven hundred and seven. Both are correct.