Went is the past tense of go. Gone is the past participle of go.
I go to the store. (present tense)
I went to the store. (past tense)
I have gone to the store. (past participle)
If you aren’t sure whether to use gone or went, remember that gone always needs an auxiliary verb before it (has, have, had, is, am, are, was, were, be), but went doesn’t.
I could have gone to the store yesterday.
I could have went to the store.