If I have a good credit score, will I surely get a loan or credit card?

The major reasons why your loan gets rejected even if you have a good credit score are:

• Imbalance between income and expenditure: When you are requesting to borrow, your income matters a lot, because you must generally show some sort of ability to repay. So, the more your loan amount requirement, the more your income requirement. Even if you have a good credit score, your repayment capacity will be taken into account, and hence, having a good income becomes a vital factor.
• Having too much of debt: Having too much of debt can negatively affect your credit worthiness, especially if you are applying for a mortgage. In this case, lenders look for existing debt obligations and they subtract it from your income. Having a high debt-income ratio might get your application rejected.