1, which affects the loan. If you have a bad credit record, you won't get a loan in a bank or financial institution in the future.
2, affecting travel, if there is a bad credit record, personal travel will also be affected. For example, you can't fly, train or go abroad.
3, affecting employment, many large companies, especially financial companies, will conduct background checks on you before you join the company. If you find that you have a bad credit record, you will definitely not be able to join the job.