Here is a brief summary of the issues relating to the formulation of Theory of Everything (ToE). To formulate ToE, we must answer following questions and calculate following quantities from some more fundamental initial conditions applying much less parameters than the tens parameters that appear in the two fundamental theories i.e. in the General Theory of Relativity (GR) and the Standard Model (SM). Are the GR and SM the complete and mathematically coherent theories? Can we unify GR and SM within the same methods? If not, then what is the cause and why gravitational constant is about 42 powers of ten times lower than electromagnetic constant for electron-positron pair (it is not the fine-structure constant)? We must calculate masses of all fundamental fermions (i.e. neutrinos, electron, muon, tauon, quarks, proton and neutron) and mixing angles that appear in the PMNS neutrino-mixing matrix and in the CKM quark-mixing matrix. We must calculate fundamental physical constants and coupling constants. We must define the dark-matter (DM) particle and the dark-energy (DE) particle. There as well should appear a formula that ties masses/energies responsible for all interactions. We must solve many other fundamental problems in particle physics and cosmology unsolved within GR and SM. For example, why hyperons are created due to the nuclear strong interactions whereas they decay due to the electroweak interactions (the answer that it is due to the properties of the strange quark does not solve the problem)? All listed problems are solved within the Scale-Symmetric Theory (SST), therefore, we believe that SST is missing part of the ToE.