Cosmetics Formulation Development

I would like to ask about the SPF value obtained from this formula.

Zinc 20%

Titanium 0.25%

Aqua BEMT 10%

Lipid cc 20%

Cyclopenta 10%

Glycerin 1%

Propylene Glycol 1%

Coconut Oil 1%

Viscolam 0.2%

Hyaluronic Acid 0.5%

Soy protein 2%

Centella Extract 2%

DI 32.05%

And I would like to know if I want the formula to have SPF 50+ PA++++, what should I adjust or add more ingredients?