In this paper we calculate the $bar{B}_s to f_0(980)$ form factors from light-cone sum rules with $B$ meson DAs. With adopting the quark-antiquark configuration of light scalar mesons,the high twist two-particle and the three-particle contributions are found to be $sim 25%$ individual, and totally they give about $50%$ correction to certain form factors in the considered energy regions. We further explore the light-cone sum rules approach to study the $S-$wave $bar{B}_s to KK$ form factors,the $f_0+f_0+f_0$ resonance model is proposed and the result shows that the background effect from $f_0+f_0$ accounts $sim 5%$. As a by-product, we extract the strong coupling $|g_{f_0 KK }| = 1.08^{+0.05}_{-0.14}$ GeV with taking the $bar{B}_s to f_0(980)$ form factors calculated previous under the narrow width approximation.
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