I make $2000/month, but live abroad. How will this impact my credit potential?

Title mostly says all. I would hope to reach 50k in total credit one day, or even more ideally, but I’m curious how much my income will impact that possibility. I live in Brazil, and rent is only $380/month, but $2000/month is still chump change my American standards which is what they calculate based on.

Note: U.S credit, I’m currently all in with Capital One. Two quicksilvers as of right now.