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Spain was fascist but not part of the Axis pact. The Spanish fascists received substantial help from Nazi Germany during the civil war against Republican Spain, but throughout WWII they declared themselves neutral and stayed mostly isolated due to being occupied with their own internal problems and exhaustion from the civil war.

They agreed to allow some volunteers to join Germany, but Spain itself never officially joined the war. There were plans for a potential joint German-Spanish attack on British territories on the Mediterranean but these never materialized because Spain was too vulnerable to a potential British trade blockade.

There was some trade with Nazi Germany including of a few resources that were important for the war, but the overall amounts were not large due to Spain being economically quite weak and devastated from the civil war. "Neutral" and "democratic" Sweden provided much more raw materials for the Nazis than fascist Spain did.

So yes, they were collaborators but not co-belligerents.