Spoken:  past participle of 'to speak'

Spok is not a word.  The simple past is "spoke."

try:

My spoken English is not good.

or:

I don't speak English well.

Spoken, spok

My spoken English is not going very well) or (my spok English is not going very well)
These sentence about the simple past are they correct?

Excuse any mistakes!

I don' speak English well.