Conditional tense

https://www.englishpage.com/modals/could.html

As per the source

"Could" is a modal verb used to express possibility or past ability as well as to make suggestions and requests. "Could" is also commonly used in conditional sentences as the conditional form of "can." It is used in Past, Present and Future tense.

In If you could travel anywhere in the world, where would you want to go?, could is being used as the conditional of 'can'.

https://learnenglish.britishcouncil.org/english-grammar/will-or-would

As per the source would is used to talk about hypotheses, about something which is possible but not real:

It is being used to talk about the result or effect of a possible situation: EG: It would be very expensive to stay in a hotel

Future tense

https://www.englishpage.com/modals/could.html

As per the source

"Could" is a modal verb used to express possibility or past ability as well as to make suggestions and requests. "Could" is also commonly used in conditional sentences as the conditional form of "can." It is used in Past, Present and Future tense.

In If you could travel anywhere in the world, where would you want to go?, could is being used as the conditional of 'can'.

https://learnenglish.britishcouncil.org/english-grammar/will-or-would

As per the source would is used to talk about hypotheses, about something which is possible but not real:

It is being used to talk about the result or effect of a possible situation: EG: It would be very expensive to stay in a hotel

https://www.englishpage.com/modals/could.html

As per the source

"Could" is a modal verb used to express possibility or past ability as well as to make suggestions and requests. "Could" is also commonly used in conditional sentences as the conditional form of "can." It is used in Past, Present and Future tense.

In If you could travel anywhere in the world, where would you want to go?, could is being used as the conditional of 'can'.

https://learnenglish.britishcouncil.org/english-grammar/will-or-would

As per the source would is used to talk about hypotheses, about something which is possible but not real:

It is being used to talk about the result or effect of a possible situation: EG: It would be very expensive to stay in a hotel

Conditional tense

https://www.englishpage.com/modals/could.html

As per the source

"Could" is a modal verb used to express possibility or past ability as well as to make suggestions and requests. "Could" is also commonly used in conditional sentences as the conditional form of "can." It is used in Past, Present and Future tense.

In If you could travel anywhere in the world, where would you want to go?, could is being used as the conditional of 'can'.

https://learnenglish.britishcouncil.org/english-grammar/will-or-would

As per the source would is used to talk about hypotheses, about something which is possible but not real:

It is being used to talk about the result or effect of a possible situation: EG: It would be very expensive to stay in a hotel