Signs for TO
Before you check what the sign is for "to", be aware of how it's used, especially if you're new to ASL (perhaps most likely if you look up a word "to"),
Yes, there is a sign for "to" in its standalone, but it's rarely used in phrases, sentences, and conversations.
ASL is its own language with its own vocabulary, grammar, determiners, structure, etc., just like any languages whether signed or spoken.
The usage of "to" will end up often redundant in sentences and ungrammatically sound. Learn grammar as much as you learn vocabulary.
The sign "to" is rarely used in ASL as most verbs and phrases already have "to" in it when producing sentences. For example, glossing terms show GO-to, WANT-to, etc.
Meaning: "expressing motion in the direction of (a particular location); used with the base form of a verb to indicate that the verb is in the infinitive." -- Oxford.
Pronunciation/articulation: Dominant forefinger (palm out) moves toward passive forefinger (palm in).
A link to a tutorial from here in the future.
Related topic: be, another word that virtually does not exist in ASL.
Similar signs not to be confused: UNTIL.