Elisa is correct your score is just part of the picture.
There are 3 parts to a mortgage:
willingness to pay (your FICO score)
ability to pay (your debt to income for housing and all monthly bills)
the collateral (the property)
You have shown by your FICO the willingness to pay but you need to speak to a loan officer on your ability to pay. This will give you a budget to work with.
All the best,