Answer:
Genotype is the potential, it is the set of genes.
Phenotype is the expression of those genes, showing the dominant/ activated gene.
For example, my mother and members of her family are short with hazel eyes and dark hair.
My dad and his family are tall, with brown eyes and dark hair.
I will have genes for height that vary- short or tall. I will have genes for eyes hazel or brown.
I will have genes for hair- dark.
You don’t know, based on what i’ve told you, what my height or eye colour is. That’s my genotype.
I am tall, with hazel eyes and dark hair. That’s my phenotype.
This is really over simplified, but it should help you understand.
Genotype is the blueprint/ building plans. Phenotype is the building.