[Issey]

I am intrested in becoming psycho therapist. How much schooling will I need

[Curlyben]

I think you mean physio (Physiotherapy) otherwise a sharp knife and a downwards slashing action is all that's really needed ;)

[Wondergirl]

You want to work with people's minds and emotions or their bodies and disabilities?

[joypulv]

Psychotherapy requirements in the US vary some by state.
You could get a Masters of Psychology, or an LSW, or in some cases a PhD such as for neurological assessment.
For undergrad in college you need a good general education, and your major could be psych, or sociology, and you need biology and statistics. But you can go on to graduate school with a different major.

(The above was a joke because you said psycho separately.)