In a dihybrid cross involving CcSs and CcSs (both heterozygous for two traits) what is the genotypic ratio?

Genotype means what the actual genetic composition is (so, ccSS or CcSs or CCss, etc) - phenotypic ratio is talking about what the APPEARANCE is - so CCss (curly non spotted) would be phenotypically the same as Ccss and CCSS (curly spotted) would be phenotypically the same as CcSs, CCSs, CcSS, etc.

This cross should give you a phenotype ratio of 9:2:2:1 with 9 curly spotted, 2 straight spotted, 2 curly non spotted and 1 straight non spotted.
The genotypes would be more varied - you can get those by setting up a punnett square.
Not doing that for you

**EDIT: Sorry; messed up my math at first - note corrected ratio.

And as a result set up the punnett square to double check so here are your genotypes:
---------CS--------Cs-------cS-------cs
CS |  CCSS | CCSs | CcSS | CcSs
Cs  |  CCSs |  CCss | CCSs | Ccss
cS  |  CcSS |  CcSs |  ccSS |  ccSs
cs   |  CcSs |  Ccss  |  ccSs  | ccss

So:
CCSS: 1
CcSs: 3
ccSs: 2
ccSS: 2
Ccss: 2
CcSS: 2
CCSs: 3
ccss: 1

The genotypic ratio of this cross would be:
1 - CCSS
2 - CCSs
2 - CcSS
4 - CcSs
1 - CCss
2 - Ccss
1 - ccSS
2 - ccSs
1 - ccss