1st how to get canadian residency from america, second does canada recognize child support wage garnishments or any wage garnishments?

There are many different options to obtain residency. Why don't you give more specific details about yourself, education, work experience, financial records, etc. so we can narrow down. Asking open question like this won't do any good.

By the way, if you are seeking way out of child support or wage garnishments, you are making a huge mistake. If you leave US, your passport will be revoked and the only choice you will have is taking a travel document and return... you won't be able to renew your passport. Do yourself some homework on how hard it will be when live in foreign country without valid ID.