Pollen and copernicus

Good afternoon.
I don’t know if this question is correct here. I am a web development student and I am creating an application about air quality and pollen. I would like the data to be provided by Copernicus. I have the code created, now I need the endpoint needed to be able to connect the copernicus api to the location api.
The ones I am using do not work for me, can someone help me.
Thanks in advance.
Regards
Rosa

See details on API use in custom applications here: