Did you only take two A-levels and no other qualifications, or did you take e.g. two A-levels and a BTEC or similar course? There are some universities that may consider just two A-levels, and many would consider a combination of A-levels and other qualifications such as a BTEC or something. However depending what you want to do, you may need to undertake some further study before you can apply to university, if that's what you want to go on to do.
If you are a UK student under the age of 24 (I think it's 24) the simplest route may be simply to see if you can take a year out and take an extra A-level (or two) as above. Alternately you could take an Access to HE course in a college and then go on to university from that. You should be able to be funded by your local authority for this, or through advanced learner loans if you're over the age of 19 (possibly 21 now). If you take out advanced learner loans for an Access to HE course and subsequently complete a bachelors degree, the loans get written off as well.
You may need to apply to a degree with a foundation year, which would then provide you a preliminary year to cover any content you may have "missed" only taking two A-levels. These are quite common in STEM subjects for all students, however for non-STEM subjects they are generally limited to international students. You may also be able to take one or more modules at the Open University to add to your existing qualifications to meet the criteria of courses you may want to apply to.
That all said, if your goal is not to go to university and instead to enter the workforce, it doesn't really matter. There are plenty of jobs that don't require A-levels, and most that do (which don't also require a degree) tend to be flexible about requirements and likely will be fine with 2 A-levels. It may depend on the job in question of course though.