I was terminated from my job this March. I've worked with the firm for 4 years. I was a good employee, they won't denied that.

Very unlikely unless your term of employement states. That you are entitled to said bonus. Bonuses unlike commissions are at the discretion of...

Anyone can sue however he has to prove that the noise is beyond normal which is unlikely

Less than a month ago I was fired for misconduct of company policy that is not always enforced. Should I contact a lawyer?

Unless you have a contract you are an at will worker as such your employement can be terminated for any reason or no reason at all.

Re file your taxes and send by mail with a copy of your divorce decree

Ex refuses to sign quit claim deed

Yes you need to go back to court to ask for an order directing she signs the document and that she is in breach of judgement of divorce.

If I'm separated from my spouse, am i responsible for half of the mortgage? Both names is on the mortgage.

Yes you are still responsible for the mortgage even if you get divorced you are still responsible no matter what the divorce or seperation...

Was I fired legally (state of WA)?

If you are an at will employee the employer can terminate your employement for any reason or no reason at all.

Do I have to allow private mortgagee access to my home?

Yes a leinholder is entitled to inspect the property. They have a right to inspect and make sure there investment is intact and being mentained. ...

Can my 15 y/o daughter legally change her last name without her non-custodial father's permission?

Then your daughter needs to wait until she turns 18

Is it illegal if my boss fires me for no reason over text

You an will as such your employer can terminate your employement for any reason or no reason at all.