Credit card and loan question

[Paweł Wojnicz]

Hello!

I have a question for anyone who can help. For last 2 years I has been investing in the US for cash in houses under Airbnb. 

I buy everything for cash, but I would like to finally start building my credit score. Can anyone advise on where to start? I only have an ITIN and EIN number for company. I don't have SSN.

I spend about 5 months a year in the USA, I still live in Europe and travel most of the time around the world.

Maybe there will be someone who will be able to advise me. I did my first tax return in 2020, another one in 2021 and I paid the tax. I use only debit card, as in 2020 bank didn't give me credit card.