Hey
first of all just try your best!
The general rule for getting into an average degree is 3 highers from fifth year.
Most degrees are either Maths/Science or English based. So, depending on what you want to do, you're going to need one of them.
English is very important (unfortunate for many people who it just doesn't click with) for university.
Int 2s won't get you into uni and neither will int 1s. Usually these are just basic requirements, eg. Many degrees want standard grade Maths at 2 or a pass at int2.
Most want higher English.
Just remember, highers are the key to university.
However, most degrees are useless to be honest. Whilst you may get accepted to an average university on a vague course which leads you to nowhere, other degrees are useful. However, these normal involve Maths and the sciences. You can be a teacher with any degree. Remember university is a big undertaking so if you're struggling now have a think about what job you want to do when you're older! Don't let you parents pressure you!