If your mathematics and physics are bad, then you have a not insurmountable uphill battle.
On the mathematics side of things, mental maths agility will stand you in better stead than a deep understading of Einstein. There are many shortcuts which you can use which will enable you to perform perfectly reasonably as a pilot.
The physics is perhaps a little harder. However, most of what happens in the air can be duplicated by you in the bath tub with a toy boat. Air and water perform very much the same dynamic or static functions around an aerofoil as a hull.
I wouldn't worry too much about it all. The writing of a CV, however is very important. May I respectfully suggest that an unhurried, unworried approach to such matters combined with the use of a spell/grammer checker will impress those whom you wish to employ you to a far greater extent than degrees in, what to many, are obscure sciences.
Good luck.
