The state district courts and superior courts won't literally have "forms" (I.e., worksheets) to complete, but there are resources through which you can find "examples."
First, a summons must include certain specific language for it to be valid. I've pasted a link to Civil Rule 4, which includes that language:
Second, if you go to the county law library, it will likely have the Washington Practice desk book series. It has a volume that includes various sample complaints.
Hope that helps.
Only certain types of cases have standard forms, usually ones that pro se litigants are expected to handle themselves like small claims; large civil complaints are usually filed by attorneys, who draft their own. I recommend hiring an attorney to help you - even if you do not want to hire someone for complete representation, many offer unbundled services, such as assisting you to draft your documents. If you are insistent about doing it on your own, you may be able to find examples of what civil complaints look like at your local law library.
I agree with my colleges about a Summons but not about a Complaint. A complaint needs to have particular elements alleging the cause of the claim. You give no information about whether this is a tort claim, or a contract dispute or a collection matter and so on. If the other party is out of the state, you may meet the threshold for a federal court. And then there is the issue of service which has to be done. I would recommend you hire an attorney to prepare, file and serve this case. If not done properly, your case can be thrown out.